{"id":11724,"date":"2026-06-30T21:09:23","date_gmt":"2026-06-30T19:09:23","guid":{"rendered":"https:\/\/www.sigalou-domotique.fr\/?p=11724"},"modified":"2026-07-01T22:03:09","modified_gmt":"2026-07-01T20:03:09","slug":"jajoute-un-door-sensor-a-ma-serrure-nuki-smart-lock-ultra","status":"publish","type":"post","link":"https:\/\/www.sigalou-domotique.fr\/en\/jajoute-un-door-sensor-a-ma-serrure-nuki-smart-lock-ultra","title":{"rendered":"I add a Door Sensor to my Nuki Smart Lock Ultra"},"content":{"rendered":"<div style=\"border: 1px solid #d9d9d9; background: #f8f8f8; padding: 18px 20px; border-radius: 12px; margin: 0 0 30px 0;\">\n<p style=\"margin: 0 0 10px 0;\">\n    <strong>\ud83d\udcd8\ud83d\udd10 Special file: <a href=\"https:\/\/www.sigalou-domotique.fr\/en\/product\/smart-lock-ultra\/\" target=\"_blank\" rel=\"noopener\">Nuki Smart Lock Ultra<\/a><\/strong>\n  <\/p>\n<p style=\"margin: 0 0 14px 0;\">\n    This article is part of my complete file from installation to accessories to home automation.\n  <\/p>\n<ul style=\"margin: 0; padding-left: 20px;\">\n<li><a href=\"https:\/\/www.sigalou-domotique.fr\/en\/je-passe-de-danalock-a-la-nuki-smart-lock-ultra\/\">I replace my Danalock V3 with a Nuki Smart Lock Ultra<\/a><\/li>\n<li><a href=\"https:\/\/www.sigalou-domotique.fr\/en\/je-connecte-la-nuki-smart-lock-ultra-a-ma-domotique\/\">I connect the Nuki Smart Lock Ultra to my home automation<\/a><\/li>\n<li><a href=\"https:\/\/www.sigalou-domotique.fr\/en\/jajoute-un-nuki-keypad-2-nfc-a-ma-serrure-smart-lock-ultra\/\">I add a Nuki Keypad 2 NFC to my Smart Lock Ultra<\/a><\/li>\n<li><strong>I add a Door Sensor to my Nuki Smart Lock Ultra<\/strong> \u2190 you are here \ud83c\udfaf<\/li>\n<\/ul>\n<\/div>\n<p>When I installed the <a href=\"https:\/\/www.sigalou-domotique.fr\/en\/product\/smart-lock-ultra\/\" target=\"_blank\" rel=\"noopener\">Nuki Smart Lock Ultra<\/a> on my front door, I have already made a <strong>leap forward<\/strong> comfort side: More key to look for, opening from the smartphone, integration into Home Assistant (my home automation platform) \u2026 in short, everyday life has become much more fluid.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-11491 size-medium\" src=\"https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/05\/4096-2731-max-238x300.jpg\" alt=\"\" width=\"238\" height=\"300\" srcset=\"https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/05\/4096-2731-max-238x300.jpg 238w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/05\/4096-2731-max-813x1024.jpg 813w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/05\/4096-2731-max-768x967.jpg 768w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/05\/4096-2731-max-1220x1536.jpg 1220w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/05\/4096-2731-max-1627x2048.jpg 1627w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/05\/4096-2731-max-600x755.jpg 600w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/05\/4096-2731-max.jpg 1791w\" sizes=\"auto, (max-width: 238px) 100vw, 238px\" \/><\/p>\n<p>Then I added the <a href=\"https:\/\/www.sigalou-domotique.fr\/en\/jajoute-un-nuki-keypad-2-nfc-a-ma-serrure-smart-lock-ultra\/\" target=\"_blank\" rel=\"noopener\">Keypad 2 NFC<\/a>, Here, the family definitively adopted the lock: Each one has its own code, its own logic, its own habits.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-11641\" src=\"https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/keypadaumur.png\" alt=\"\" width=\"750\" height=\"562\" srcset=\"https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/keypadaumur.png 1483w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/keypadaumur-300x225.png 300w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/keypadaumur-1024x768.png 1024w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/keypadaumur-768x576.png 768w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/keypadaumur-600x450.png 600w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/p>\n<p>But there was one question that I asked myself a little too often:<\/p>\n<blockquote><p>\u201cOK, the <strong>lock<\/strong> is locked \u2026 but is \u2011 what the <strong>door<\/strong> Is it really closed?\u201d<\/p><\/blockquote>\n<p>That is when I decided to add the <strong>Nuki <a href=\"https:\/\/www.sigalou-domotique.fr\/en\/product\/door-sensor\/\" target=\"_blank\" rel=\"noopener\">Door Sensor<\/a><\/strong>.<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_89 counter-hierarchy ez-toc-counter ez-toc-light-blue ez-toc-container-direction\">\n<label for=\"ez-toc-cssicon-toggle-item-6ad5acf1ddb73\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-6ad5acf1ddb73\"  aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.sigalou-domotique.fr\/en\/jajoute-un-door-sensor-a-ma-serrure-nuki-smart-lock-ultra\/#%F0%9F%A7%B2_Pourquoi_un_Door_Sensor_sur_une_serrure_deja_connectee\" >\ud83e\uddf2 Why a Door Sensor on an already connected lock?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.sigalou-domotique.fr\/en\/jajoute-un-door-sensor-a-ma-serrure-nuki-smart-lock-ultra\/#%F0%9F%9A%AA_Pourquoi_pas_un_capteur_portefenetre_Zigbee_ou_Matter\" >\ud83d\udeaa Why not a Zigbee or Matter door\/window sensor?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.sigalou-domotique.fr\/en\/jajoute-un-door-sensor-a-ma-serrure-nuki-smart-lock-ultra\/#%F0%9F%A7%A9_A_quoi_ressemble_le_Nuki_Door_Sensor\" >\ud83e\udde9 What does the Nuki Door Sensor look like?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.sigalou-domotique.fr\/en\/jajoute-un-door-sensor-a-ma-serrure-nuki-smart-lock-ultra\/#%F0%9F%A7%AA_Capteur_Nuki_vs_capteurs_douverture_%E2%80%9Cclassiques%E2%80%9D_ONOFF_binaire\" >\ud83e\uddea Nuki sensor vs \u201cclassic\u201d aperture sensors (binary ON\/OFF)<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.sigalou-domotique.fr\/en\/jajoute-un-door-sensor-a-ma-serrure-nuki-smart-lock-ultra\/#%F0%9F%94%8C_Comment_fonctionne_un_contact_magnetique_classique_Reed\" >\ud83d\udd0c How does a conventional magnetic contact (Reed) work?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.sigalou-domotique.fr\/en\/jajoute-un-door-sensor-a-ma-serrure-nuki-smart-lock-ultra\/#%F0%9F%92%B6_Ce_que_fait_Nuki_de_plus_et_pourquoi_cest_plus_cher\" >\ud83d\udcb6 What Nuki does more (and why it's more expensive)<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.sigalou-domotique.fr\/en\/jajoute-un-door-sensor-a-ma-serrure-nuki-smart-lock-ultra\/#%F0%9F%9B%A0%EF%B8%8F_Installation_sur_ma_porte_simple_mais_a_soigner\" >\ud83d\udee0  Installation on my door: simple, but to be treated<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.sigalou-domotique.fr\/en\/jajoute-un-door-sensor-a-ma-serrure-nuki-smart-lock-ultra\/#%F0%9F%A7%BD_1_Preparation_des_surfaces\" >\ud83e\uddfd 1. Surface preparation<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.sigalou-domotique.fr\/en\/jajoute-un-door-sensor-a-ma-serrure-nuki-smart-lock-ultra\/#%F0%9F%93%8D_2_Positionnement_du_capteur_et_de_laimant\" >\ud83d\udccd 2. Positioning of sensor and magnet<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.sigalou-domotique.fr\/en\/jajoute-un-door-sensor-a-ma-serrure-nuki-smart-lock-ultra\/#%F0%9F%94%8B_3_Mise_sous_tension_et_appairage\" >\ud83d\udd0b 3. Powering on and pairing<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.sigalou-domotique.fr\/en\/jajoute-un-door-sensor-a-ma-serrure-nuki-smart-lock-ultra\/#%F0%9F%94%81_La_calibration_letape_ou_il_ne_faut_pas_se_precipiter\" >\ud83d\udd01 Calibration: the step where you don\u2019t have to rush<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.sigalou-domotique.fr\/en\/jajoute-un-door-sensor-a-ma-serrure-nuki-smart-lock-ultra\/#%F0%9F%98%85_Mes_galeres_et_comment_je_men_suis_sorti\" >\ud83d\ude05 My galleys (and how I got away with it)<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.sigalou-domotique.fr\/en\/jajoute-un-door-sensor-a-ma-serrure-nuki-smart-lock-ultra\/#%F0%9F%93%B1_Ce_que_ca_change_dans_lapplication_Nuki\" >\ud83d\udcf1 What it changes in the Nuki app<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.sigalou-domotique.fr\/en\/jajoute-un-door-sensor-a-ma-serrure-nuki-smart-lock-ultra\/#%F0%9F%94%94_Notifications_et_alertes\" >\ud83d\udd14 Notifications and Alerts<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.sigalou-domotique.fr\/en\/jajoute-un-door-sensor-a-ma-serrure-nuki-smart-lock-ultra\/#%F0%9F%A4%93_Et_cote_domotique_ca_donne_quoi\" >\ud83e\udd13 And on the home automation side, what does it look like?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/www.sigalou-domotique.fr\/en\/jajoute-un-door-sensor-a-ma-serrure-nuki-smart-lock-ultra\/#%E2%9C%85_Mon_avis_apres_installation\" >\u2705 My opinion after installation<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"%F0%9F%A7%B2_Pourquoi_un_Door_Sensor_sur_une_serrure_deja_connectee\"><\/span>\ud83e\uddf2 Why a Door Sensor on an already connected lock?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Without <a href=\"https:\/\/www.sigalou-domotique.fr\/en\/product\/door-sensor\/\" target=\"_blank\" rel=\"noopener\">Door Sensor<\/a>, the Nuki Ultra knows very well in which position the lock is located: locked, unlocked, in action.<\/p>\n<p>On the other hand, it does not know <strong>nothing<\/strong> of the State <strong>physics<\/strong> of the door: Closed, open \u2026 all this remains invisible without a dedicated sensor.<\/p>\n<p>As a result, you can end up with:<\/p>\n<ul>\n<li>a Door <strong>poorly closed but locked<\/strong> (yes, it is possible \u2026);<\/li>\n<li>automatisms that lock when the door is not stopped;<\/li>\n<li>zero alert if the door remains open \u201ca little too long\u201d.<\/li>\n<\/ul>\n<p>The <a href=\"https:\/\/www.sigalou-domotique.fr\/en\/product\/door-sensor\/\" target=\"_blank\" rel=\"noopener\">Door Sensor<\/a> brings this missing information to the Smart Lock: it allows Nuki to know if the door is <strong>closed<\/strong> or <strong>open<\/strong>, and to take this into account in the app, notifications and integrations (Home Assistant, other systems).<\/p>\n<h2><span class=\"ez-toc-section\" id=\"%F0%9F%9A%AA_Pourquoi_pas_un_capteur_portefenetre_Zigbee_ou_Matter\"><\/span>\ud83d\udeaa Why not a Zigbee or Matter door\/window sensor?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>That was my first idea: I could have checked that the door was closed with a Zigbee or Matter home automation sensor, connected to Home Assistant (or any other home automation box), as I already do for other doors and windows.<\/p>\n<p>And <strong>Yes, it works<\/strong>. But the real difference with the <a href=\"https:\/\/www.sigalou-domotique.fr\/en\/product\/door-sensor\/\" target=\"_blank\" rel=\"noopener\">Door Sensor<\/a> Nuki\u2019s position is that this equipment is part of the<strong>Nuki Ecosystem<\/strong> :<\/p>\n<ul>\n<li>the <a href=\"https:\/\/www.sigalou-domotique.fr\/en\/product\/door-sensor\/\" target=\"_blank\" rel=\"noopener\">Door Sensor<\/a> communicates continuously with the lock;<\/li>\n<li>the Lock <strong>adapts his behavior<\/strong> depending on the condition of the door (open\/closed);<\/li>\n<li>everything is configured in the same place, in the<strong>Nuki App<\/strong>, without going through Home Assistant.<\/li>\n<\/ul>\n<p>For example, the lock will not move until the door is closed, and conversely, as soon as the door is closed, the lock can lock automatically.<\/p>\n<p>Obviously, all this is configured via the Nuki app, in an integrated and independent way, without the need to open Home Assistant. For a beginner, it is much simpler: <strong>a single app<\/strong>, a single universe.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"%F0%9F%A7%A9_A_quoi_ressemble_le_Nuki_Door_Sensor\"><\/span>\ud83e\udde9 What does the Nuki Door Sensor look like?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-11403\" src=\"https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/05\/Door-Sensor.png\" alt=\"Door Sensor Nuki\" width=\"650\" height=\"650\" srcset=\"https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/05\/Door-Sensor.png 1254w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/05\/Door-Sensor-300x300.png 300w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/05\/Door-Sensor-1024x1024.png 1024w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/05\/Door-Sensor-150x150.png 150w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/05\/Door-Sensor-768x768.png 768w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/05\/Door-Sensor-600x600.png 600w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/05\/Door-Sensor-100x100.png 100w\" sizes=\"auto, (max-width: 650px) 100vw, 650px\" \/><\/p>\n<p>The <a href=\"https:\/\/www.sigalou-domotique.fr\/en\/product\/door-sensor\/\" target=\"_blank\" rel=\"noopener\">Door Sensor<\/a> It consists of two components:<\/p>\n<ul>\n<li>one <strong>Magnetic Sensor<\/strong> (the \u201cbig\u201d module), to be fixed on the <strong>framework<\/strong> the door;<\/li>\n<li>one <strong>magnet<\/strong> discreet, to be fixed directly on the <strong>door<\/strong>.<\/li>\n<\/ul>\n<p>Both are mounted on the inner side, like the Smart Lock. The sensor measures the <strong>magnetic field<\/strong> issued by the magnet and, based on this measurement, determines whether the door is considered <strong>closed<\/strong> or <strong>open<\/strong>.<\/p>\n<p><strong>\u26a0  Important:<\/strong><\/p>\n<ul>\n<li>the <a href=\"https:\/\/www.sigalou-domotique.fr\/en\/product\/door-sensor\/\" target=\"_blank\" rel=\"noopener\">Door Sensor<\/a> is planned for the <strong>wooden or plastic doors<\/strong> ;<\/li>\n<li>the <strong>metal doors<\/strong> and <strong>sliding doors<\/strong> are not supported (the metal disrupts the measurement, and the sliding doors are completely out of the intended geometry).<\/li>\n<\/ul>\n<p>If your front door is made of metal, this sensor is not suitable: it will then be necessary to start on another solution (classic home automation sensor + logic in Home Assistant, for example).<\/p>\n<h2><span class=\"ez-toc-section\" id=\"%F0%9F%A7%AA_Capteur_Nuki_vs_capteurs_douverture_%E2%80%9Cclassiques%E2%80%9D_ONOFF_binaire\"><\/span>\ud83e\uddea Nuki sensor vs \u201cclassic\u201d aperture sensors (binary ON\/OFF)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>This is where Nuki makes a choice <strong>technological<\/strong> very different from our famous small door\/window sensors Zigbee\/Z-Wave at 10\u201320 \u20ac.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"%F0%9F%94%8C_Comment_fonctionne_un_contact_magnetique_classique_Reed\"><\/span>\ud83d\udd0c How does a conventional magnetic contact (Reed) work?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Conventional door\/window sensors are usually based on a <strong>Reed Switch<\/strong> :<\/p>\n<ul>\n<li>the magnet is close \u2192 the metal slats of the Reed touch \u2192 the circuit is <strong>closed<\/strong> ;<\/li>\n<li>the magnet moves away \u2192 the slats separate \u2192 the circuit is <strong>open<\/strong>.<\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-11727\" src=\"https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/No6-JPC-protection-des-ampoules-reed-6-300x171-1.jpg\" alt=\"Reed switch\" width=\"300\" height=\"171\" srcset=\"https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/No6-JPC-protection-des-ampoules-reed-6-300x171-1.jpg 300w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/No6-JPC-protection-des-ampoules-reed-6-300x171-1-18x10.jpg 18w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/p>\n<p>This is <strong>binary<\/strong>, ultra simple, very robust \u2026 but limited:<\/p>\n<ul>\n<li>the sensor only \u201cincludes\u201d <strong>ON\/OFF<\/strong> (near\/not close);<\/li>\n<li>He can't tell the difference between <strong>slightly ajar<\/strong> and <strong>wide open door<\/strong> : as soon as the tipping distance is exceeded, it is \u201copen\u201d, point.<\/li>\n<\/ul>\n<p>It is perfect for many uses (perimeter alarm, simple opening info), but we remain on a logic <strong>all or nothing<\/strong> which does not take into account the small mechanical nuances of the door.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"%F0%9F%92%B6_Ce_que_fait_Nuki_de_plus_et_pourquoi_cest_plus_cher\"><\/span>\ud83d\udcb6 What Nuki does more (and why it's more expensive)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The <a href=\"https:\/\/www.sigalou-domotique.fr\/en\/product\/door-sensor\/\" target=\"_blank\" rel=\"noopener\">Door Sensor<\/a> Nuki\u2019s switch is not limited to a simple binary Reed switch: he uses a <strong>Magnetic Sensor<\/strong> more sophisticated measuring the<strong>Magnetic field strength<\/strong> generated by the magnet.<\/p>\n<p>Nuki does not specify whether it is a Hall effect sensor or a magnetoresistive sensor.<\/p>\n<p>During calibration, the sensor records the signal value in different positions:<\/p>\n<ul>\n<li>door <strong>closed<\/strong> ;<\/li>\n<li>door <strong>open<\/strong> (with a gradual shift between the two).<\/li>\n<\/ul>\n<p>Next, Nuki defines <strong>internal thresholds<\/strong> to decide whether, at a moment T, the door should be considered as <strong>closed<\/strong> or <strong>open<\/strong>. You only see \u201cclosed\/open\u201d in the application, but behind it the logic takes into account several intermediate values.<\/p>\n<p>The system is therefore <strong>finer<\/strong> a simple gross ON\/OFF: it takes into account a range of values, which improves the tolerance to micro\u2011variations (door play, expansion, slight position deviations, etc.).<\/p>\n<p>I had the feeling that this sensor has a form of <strong>Learning capacity<\/strong> : the first tests were average and, little by little, it seems to \u201cunderstand\u201d the state of the door more and more.<\/p>\n<p>Specifically, the technology chosen and the intelligence behind it explain:<\/p>\n<ul>\n<li>the <strong>higher price<\/strong> from <a href=\"https:\/\/www.sigalou-domotique.fr\/en\/product\/door-sensor\/\" target=\"_blank\" rel=\"noopener\">Door Sensor<\/a> compared to a simple alarm contact;<\/li>\n<li>the fact that it is thought of as <strong>\u201cintegrated\u201d accessory<\/strong> the Nuki ecosystem (in terms of design, app, notifications, Matter, etc.), and not as a generic 2-wire sensor.<\/li>\n<\/ul>\n<p>For a beginner, this can be summarised as follows: a conventional Reed sensor answers just \u201cyes\/no\u201d, <a href=\"https:\/\/www.sigalou-domotique.fr\/en\/product\/door-sensor\/\" target=\"_blank\" rel=\"noopener\">Door Sensor<\/a> Nuki <em>observes<\/em> a little more finely what happens, and in addition he discusses directly with the lock.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"%F0%9F%9B%A0%EF%B8%8F_Installation_sur_ma_porte_simple_mais_a_soigner\"><\/span>\ud83d\udee0  Installation on my door: simple, but to be treated<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-11728\" src=\"https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Capture-decran-2026-06-30-220840.png\" alt=\"Installation wizard\" width=\"350\" height=\"467\" srcset=\"https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Capture-decran-2026-06-30-220840.png 1221w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Capture-decran-2026-06-30-220840-225x300.png 225w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Capture-decran-2026-06-30-220840-768x1024.png 768w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Capture-decran-2026-06-30-220840-1152x1536.png 1152w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Capture-decran-2026-06-30-220840-9x12.png 9w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Capture-decran-2026-06-30-220840-600x800.png 600w\" sizes=\"auto, (max-width: 350px) 100vw, 350px\" \/><\/p>\n<p>As for the <a href=\"https:\/\/www.sigalou-domotique.fr\/en\/product\/smart-lock-ultra\/\" target=\"_blank\" rel=\"noopener\">Smart Lock Ultra<\/a>, Nuki offers a very well done assistant in the app. But there are still some subtleties that deserve to be well respected.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"%F0%9F%A7%BD_1_Preparation_des_surfaces\"><\/span>\ud83e\uddfd 1. Surface preparation<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Nuki recommends:<\/p>\n<ul>\n<li>from <strong>cleanse<\/strong> the bonding area (alcohol\/soft cleaner);<\/li>\n<li>check that the surface is <strong>flat and dry<\/strong>, so that the sensor mounting plate adheres properly.<\/li>\n<\/ul>\n<p>A sensor that has a slight play on its base is the door open to false positives \u2026 (in every sense of the word).<\/p>\n<h3><span class=\"ez-toc-section\" id=\"%F0%9F%93%8D_2_Positionnement_du_capteur_et_de_laimant\"><\/span>\ud83d\udccd 2. Positioning of sensor and magnet<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Official rules:<\/p>\n<ul>\n<li>the <strong>sensor<\/strong> attaches to the <strong>framework<\/strong> ;<\/li>\n<li>l\u2019<strong>magnet<\/strong> on the <strong>door<\/strong>, inner side.<\/li>\n<\/ul>\n<p><a href=\"https:\/\/help.nuki.io\/hc\/fr\/articles\/4402753485073-Exemples-de-montage-du-Door-Sensor\" target=\"_blank\" rel=\"noopener\">Two large possible configs<\/a> :<\/p>\n<ul>\n<li>Door and frame at <strong>same level<\/strong> \u2192 mounted magnet <strong>in parallel<\/strong> the sensor;<\/li>\n<\/ul>\n<table style=\"border-collapse: collapse; width: 100%;\">\n<tbody>\n<tr>\n<td style=\"width: 50%;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-11730 size-medium\" src=\"https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/door-sensor-mounting-example-variant-A-300x169.jpg\" alt=\"Mounting variant A\" width=\"300\" height=\"169\" srcset=\"https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/door-sensor-mounting-example-variant-A-300x169.jpg 300w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/door-sensor-mounting-example-variant-A-1024x576.jpg 1024w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/door-sensor-mounting-example-variant-A-768x432.jpg 768w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/door-sensor-mounting-example-variant-A-1536x864.jpg 1536w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/door-sensor-mounting-example-variant-A-18x10.jpg 18w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/door-sensor-mounting-example-variant-A-600x338.jpg 600w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/door-sensor-mounting-example-variant-A.jpg 1920w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/td>\n<td style=\"width: 50%;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-11731 size-medium\" src=\"https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/door-sensor-mounting-example-variant-A-2-300x169.jpg\" alt=\"Mounting variant A - other view\" width=\"300\" height=\"169\" srcset=\"https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/door-sensor-mounting-example-variant-A-2-300x169.jpg 300w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/door-sensor-mounting-example-variant-A-2-1024x576.jpg 1024w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/door-sensor-mounting-example-variant-A-2-768x432.jpg 768w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/door-sensor-mounting-example-variant-A-2-1536x864.jpg 1536w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/door-sensor-mounting-example-variant-A-2-18x10.jpg 18w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/door-sensor-mounting-example-variant-A-2-600x338.jpg 600w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/door-sensor-mounting-example-variant-A-2.jpg 1920w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul>\n<li>Door recessed or protruding \u2192 magnet mounted at <strong>90\u00b0<\/strong> on the song of the door, but always in front of the sensor.<\/li>\n<\/ul>\n<table style=\"border-collapse: collapse; width: 100%;\">\n<tbody>\n<tr>\n<td style=\"width: 50%;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-11732 size-medium\" src=\"https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/door-sensor-mounting-example-variant-B-2-300x169.jpg\" alt=\"Mounting variant B\" width=\"300\" height=\"169\" srcset=\"https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/door-sensor-mounting-example-variant-B-2-300x169.jpg 300w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/door-sensor-mounting-example-variant-B-2-1024x576.jpg 1024w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/door-sensor-mounting-example-variant-B-2-768x432.jpg 768w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/door-sensor-mounting-example-variant-B-2-1536x864.jpg 1536w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/door-sensor-mounting-example-variant-B-2-18x10.jpg 18w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/door-sensor-mounting-example-variant-B-2-600x338.jpg 600w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/door-sensor-mounting-example-variant-B-2.jpg 1920w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/td>\n<td style=\"width: 50%;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-medium wp-image-11733\" src=\"https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/door-sensor-mounting-example-variant-B-300x169.jpg\" alt=\"Mounting variant B - other view\" width=\"300\" height=\"169\" srcset=\"https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/door-sensor-mounting-example-variant-B-300x169.jpg 300w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/door-sensor-mounting-example-variant-B-1024x576.jpg 1024w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/door-sensor-mounting-example-variant-B-768x432.jpg 768w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/door-sensor-mounting-example-variant-B-1536x864.jpg 1536w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/door-sensor-mounting-example-variant-B-18x10.jpg 18w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/door-sensor-mounting-example-variant-B-600x338.jpg 600w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/door-sensor-mounting-example-variant-B.jpg 1920w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>And above all:<\/p>\n<blockquote><p>the distance between the sensor and the magnet shall be between <strong>0.5 and 3 cm<\/strong>, door closed.<\/p><\/blockquote>\n<p><a href=\"https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Door-Sensor-mounting.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-11729\" src=\"https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Door-Sensor-mounting.jpg\" alt=\"Door Sensor mounting diagram\" width=\"600\" height=\"339\" srcset=\"https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Door-Sensor-mounting.jpg 1432w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Door-Sensor-mounting-300x169.jpg 300w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Door-Sensor-mounting-1024x579.jpg 1024w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Door-Sensor-mounting-768x434.jpg 768w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Door-Sensor-mounting-18x10.jpg 18w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Door-Sensor-mounting-600x339.jpg 600w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/a><\/p>\n<p>Nuki also gives a visual cue with the LED and the small mark on the sensor to align the bottom of the magnet in the right place. For a beginner, really follow the diagram: Do not place \u201ceye\u201d, follow the markers.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"%F0%9F%94%8B_3_Mise_sous_tension_et_appairage\"><\/span>\ud83d\udd0b 3. Powering on and pairing<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The sensor works on a <strong>battery ER14250<\/strong>. When it is first put into service (withdrawn tongue), it is put into service. <strong>maintenance mode<\/strong>, ready to be added.<\/p>\n<p>From the Nuki app:<\/p>\n<ul>\n<li>Menu \u2192 <strong>Manage devices<\/strong> \u2192 <strong>Accessories<\/strong> \u2192 <strong>Nuki Door Sensor<\/strong> ;<\/li>\n<li>the assistant is followed, the lock detects the sensor using Bluetooth;<\/li>\n<li>once paired, we <strong>clips<\/strong> the sensor on its mounting plate.<\/li>\n<\/ul>\n<p>If you want to reset\/modify the installation later, you can use the <strong>anti-\u2011sabotage button<\/strong> on the back to return it to maintenance mode. To put it simply: If you change the place of the sensor, remember to put it back in this mode before starting the procedure again.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"%F0%9F%94%81_La_calibration_letape_ou_il_ne_faut_pas_se_precipiter\"><\/span>\ud83d\udd01 Calibration: the step where you don\u2019t have to rush<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-11734 size-medium\" src=\"https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Screenshot_20260630_220421_Nuki-138x300.jpg\" alt=\"Calibration screen\" width=\"138\" height=\"300\" srcset=\"https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Screenshot_20260630_220421_Nuki-138x300.jpg 138w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Screenshot_20260630_220421_Nuki-473x1024.jpg 473w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Screenshot_20260630_220421_Nuki-768x1664.jpg 768w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Screenshot_20260630_220421_Nuki-709x1536.jpg 709w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Screenshot_20260630_220421_Nuki-945x2048.jpg 945w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Screenshot_20260630_220421_Nuki-6x12.jpg 6w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Screenshot_20260630_220421_Nuki-600x1300.jpg 600w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Screenshot_20260630_220421_Nuki.jpg 1080w\" sizes=\"auto, (max-width: 138px) 100vw, 138px\" \/><\/p>\n<p>Calibration is the moment when the <a href=\"https:\/\/www.sigalou-domotique.fr\/en\/product\/door-sensor\/\" target=\"_blank\" rel=\"noopener\">Door Sensor<\/a> \u201clearns\u201d what a door is <strong>closed<\/strong> and a door <strong>open<\/strong> on YOUR specific installation.<\/p>\n<p>The assistant asks you, step by step:<\/p>\n<ol>\n<li>from <strong>close<\/strong> the door \u2192 sensor records the \u2018closed door\u2019 value;<\/li>\n<li>d<strong>open<\/strong> the door according to the instructions \u2192 the sensor records the values associated with the open position.<\/li>\n<\/ol>\n<p>Nuki insists very clearly on one point in his doc:<\/p>\n<blockquote><p>it is necessary <strong>move the door slowly<\/strong> during these steps, so that the sensor correctly detects variations in the magnetic field.<\/p><\/blockquote>\n<p>For a beginner: Do not skip this step, take the time to follow exactly what the app is asking for, without forcing or going too fast.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"%F0%9F%98%85_Mes_galeres_et_comment_je_men_suis_sorti\"><\/span>\ud83d\ude05 My galleys (and how I got away with it)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>I'm not going to lie: I did not behave perfectly at first.<\/p>\n<p>For example, I had:<\/p>\n<ul>\n<li>physically closed door, displayed \u201copen\u201d in the app;<\/li>\n<li>or a state that took time to update.<\/li>\n<\/ul>\n<p>Going to see l<a href=\"https:\/\/help.nuki.io\/hc\/fr\/sections\/360005928258-Montage-et-configuration\" target=\"_blank\" rel=\"noopener\">a Nuki Troubleshooting Doc<\/a>, the main common causes are:<\/p>\n<ul>\n<li>sensor\/magnet distance a little too limited (I have often been too close);<\/li>\n<li>Boiled Door <strong>too fast<\/strong> when calibrating (yes, it is written in the doc and everywhere and I was going too fast);<\/li>\n<li>light mechanical play in the door;<\/li>\n<li>sensor badly plated on its support (yes, I moved the sensor several times and the double-sided one needed to be redone).<\/li>\n<\/ul>\n<p>On this last point, there is a trap with a small sensor <strong>anti-snapping<\/strong> (or \u201canti-sabotage\u201d).<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-11737\" src=\"https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/titoulet-300x300.png\" alt=\"Anti-snapping sensor\" width=\"169\" height=\"169\" srcset=\"https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/titoulet-300x300.png 300w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/titoulet-150x150.png 150w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/titoulet-12x12.png 12w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/titoulet-100x100.png 100w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/titoulet.png 474w\" sizes=\"auto, (max-width: 169px) 100vw, 169px\" \/><\/p>\n<p>If the double-sided is not nickel, this small sensor blocks everything and a special state appears:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-medium wp-image-11735\" src=\"https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Screenshot_20260621_201939_Nuki-300x211.jpg\" alt=\"Door Sensor removed\" width=\"300\" height=\"211\" srcset=\"https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Screenshot_20260621_201939_Nuki-300x211.jpg 300w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Screenshot_20260621_201939_Nuki-1024x720.jpg 1024w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Screenshot_20260621_201939_Nuki-768x540.jpg 768w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Screenshot_20260621_201939_Nuki-18x12.jpg 18w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Screenshot_20260621_201939_Nuki-600x422.jpg 600w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Screenshot_20260621_201939_Nuki.jpg 1080w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/p>\n<p><strong>\u201cRemoved\u201d<\/strong> is very clear: the sensor no longer touches its base completely, it is necessary to redo the holding of the double-sided to have instead, on this screen, the normal state of the <a href=\"https:\/\/www.sigalou-domotique.fr\/en\/product\/door-sensor\/\" target=\"_blank\" rel=\"noopener\">Door Sensor<\/a> and battery:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-medium wp-image-11736\" src=\"https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Screenshot_20260621_202526_Nuki-300x214.jpg\" alt=\"Door Sensor OK\" width=\"300\" height=\"214\" srcset=\"https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Screenshot_20260621_202526_Nuki-300x214.jpg 300w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Screenshot_20260621_202526_Nuki-1024x731.jpg 1024w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Screenshot_20260621_202526_Nuki-768x548.jpg 768w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Screenshot_20260621_202526_Nuki-18x12.jpg 18w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Screenshot_20260621_202526_Nuki-600x428.jpg 600w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Screenshot_20260621_202526_Nuki.jpg 1080w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/p>\n<p>If Nuki has provided for this status to be displayed <strong>\u201cremoved\u201d<\/strong>, is that many users have had the concern. Well thought out, but it surprises the first time.<\/p>\n<p>What I did to stabilise all this:<\/p>\n<ul>\n<li>relaunch a <strong>recalibration<\/strong> since: Smart Lock \u2192 <strong>Settings<\/strong> \u2192 <strong>Manage Door Sensor<\/strong> \u2192 <strong>Calibrate Door Sensor<\/strong> ;<\/li>\n<li>be much more <strong>slow<\/strong> in door movements (yes, really slow);<\/li>\n<li>adjust the position of the magnet a little to stay well within the 0.5\u20133 cm range;<\/li>\n<li>check that the sensor was properly clipped without play.<\/li>\n<\/ul>\n<p>Once this combo was respected, the behavior became frankly reliable.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"%F0%9F%93%B1_Ce_que_ca_change_dans_lapplication_Nuki\"><\/span>\ud83d\udcf1 What it changes in the Nuki app<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Once the <a href=\"https:\/\/www.sigalou-domotique.fr\/en\/product\/door-sensor\/\" target=\"_blank\" rel=\"noopener\">Door Sensor<\/a> operational, the Nuki app no longer merely displays:<\/p>\n<ul>\n<li>\ud83d\udd12 <strong>locked<\/strong> \/ <strong>unlocked<\/strong> (state of the lock),<\/li>\n<\/ul>\n<p>but also:<\/p>\n<ul>\n<li>\ud83d\udeaa <strong>Closed door<\/strong> \/ <strong>Open Door<\/strong> (Door condition).<\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-11738\" src=\"https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Capture-decran-2026-06-30-222953-545x1024.png\" alt=\"Door state in the Nuki app\" width=\"350\" height=\"658\" srcset=\"https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Capture-decran-2026-06-30-222953-545x1024.png 545w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Capture-decran-2026-06-30-222953-160x300.png 160w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Capture-decran-2026-06-30-222953-768x1443.png 768w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Capture-decran-2026-06-30-222953-818x1536.png 818w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Capture-decran-2026-06-30-222953-6x12.png 6w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Capture-decran-2026-06-30-222953-600x1127.png 600w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Capture-decran-2026-06-30-222953.png 1080w\" sizes=\"auto, (max-width: 350px) 100vw, 350px\" \/><\/p>\n<p>Combinations of the following type can therefore be seen:<\/p>\n<ul>\n<li>Door <strong>closed<\/strong> + lock <strong>locked<\/strong> \u2192 perfect;<\/li>\n<li>Door <strong>closed<\/strong> + lock <strong>unlocked<\/strong> \u2192 someone is at home;<\/li>\n<li>Door <strong>open<\/strong> + lock <strong>locked<\/strong> \u2192 to be monitored;<\/li>\n<li>Door <strong>open<\/strong> + lock <strong>unlocked<\/strong> \u2192 door really open.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"%F0%9F%94%94_Notifications_et_alertes\"><\/span>\ud83d\udd14 Notifications and Alerts<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-11740\" src=\"https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Capture-decran-2026-06-30-223312-1.png\" alt=\"Door Sensor Notifications\" width=\"350\" height=\"758\" srcset=\"https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Capture-decran-2026-06-30-223312-1.png 1080w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Capture-decran-2026-06-30-223312-1-138x300.png 138w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Capture-decran-2026-06-30-223312-1-473x1024.png 473w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Capture-decran-2026-06-30-223312-1-768x1664.png 768w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Capture-decran-2026-06-30-223312-1-709x1536.png 709w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Capture-decran-2026-06-30-223312-1-945x2048.png 945w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Capture-decran-2026-06-30-223312-1-6x12.png 6w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Capture-decran-2026-06-30-223312-1-600x1300.png 600w\" sizes=\"auto, (max-width: 350px) 100vw, 350px\" \/><\/p>\n<p>The app allows you to configure <strong>notifications<\/strong> related to the condition of the door:<\/p>\n<ul>\n<li>alerts if the door remains <strong>open<\/strong> too long;<\/li>\n<li>alerts if the lock tries to <strong>lock<\/strong> while the door is not closed.<\/li>\n<\/ul>\n<p>For a front door, this is exactly the kind of detail that ends up counting on a daily basis. Everyone can choose what they want to do: be notified all the time, only in absence mode, or not at all.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"%F0%9F%A4%93_Et_cote_domotique_ca_donne_quoi\"><\/span>\ud83e\udd13 And on the home automation side, what does it look like?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>As I explained in <a href=\"https:\/\/www.sigalou-domotique.fr\/en\/je-connecte-la-nuki-smart-lock-ultra-a-ma-domotique\/\" target=\"_blank\" rel=\"noopener\">I connect the Nuki Smart Lock Ultra to my home automation<\/a> :<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-11741\" src=\"https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Capture-decran-2026-06-14-175514-600x757-1.png\" alt=\"Nuki Entities in Home Assistant\" width=\"600\" height=\"757\" srcset=\"https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Capture-decran-2026-06-14-175514-600x757-1.png 600w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Capture-decran-2026-06-14-175514-600x757-1-238x300.png 238w, https:\/\/www.sigalou-domotique.fr\/wp-content\/uploads\/2026\/06\/Capture-decran-2026-06-14-175514-600x757-1-10x12.png 10w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<p>The status of the door (Open or Closed) can be found in Home Assistant, whether in MQTT or Matter.<\/p>\n<p>Indeed, on the side of home automation integrations (Nuki Hub, MQTT, Home Assistant), we see that the <a href=\"https:\/\/www.sigalou-domotique.fr\/en\/product\/door-sensor\/\" target=\"_blank\" rel=\"noopener\">Door Sensor<\/a> is exposed as <strong>separate entity<\/strong>, in addition to the lock:<\/p>\n<ul>\n<li>an entity <code>lock.xxx<\/code> for the Smart Lock;<\/li>\n<li>an entity <code>binary_sensor.xxx_door<\/code> (or equivalent) for the condition of the door.<\/li>\n<\/ul>\n<p>Some Matter\/SmartThings drivers consider that <strong>anything that is not \u201cclosed\u201d is treated as \u201copen\u201d<\/strong>. In other words, if it is not explicitly closed, it is considered open.<\/p>\n<p>From there, we can imagine scenarios in Home Assistant:<\/p>\n<ul>\n<li>prevent an automatism from locking if <code>doorState!= closed<\/code> ;<\/li>\n<li>trigger an alert if the door switches to \u201copen\u201d while the house is in \u201cAbsent\u201d mode;<\/li>\n<li>turn on the \u2018closed \u2192 open\u2019 transition input lighting after dark.<\/li>\n<\/ul>\n<p>For beginners: You don't have to get into this from day one. The <a href=\"https:\/\/www.sigalou-domotique.fr\/en\/product\/door-sensor\/\" target=\"_blank\" rel=\"noopener\">Door Sensor<\/a> already works very well with the Nuki app alone. The Home Assistant part is a <strong>second stage<\/strong> to go further.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E2%9C%85_Mon_avis_apres_installation\"><\/span>\u2705 My opinion after installation<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>After a few weeks of use, my feeling is clear:<\/p>\n<ul>\n<li>The <a href=\"https:\/\/www.sigalou-domotique.fr\/en\/product\/door-sensor\/\" target=\"_blank\" rel=\"noopener\">Door Sensor<\/a> is <strong>the brick that was missing<\/strong> for the Nuki Smart Lock Ultra to have a coherent view of the whole <strong>lock + door<\/strong>.<\/li>\n<li>The technological difference with a simple magnetic contact <strong>explains the price<\/strong> : we are no longer in the small generic binary sensor, but in an integrated module, calibrated, designed to work hand in hand with the lock.<\/li>\n<li>On the usage side, the \u2018door remained open\u2019 notifications and the possibility to exploit the state of the door in Home Assistant bring a real plus in comfort and security.<\/li>\n<li>The real plus is that the lock lock locks a few seconds after the door is closed: it\u2019s impressive, totally brilliant \u2026 and you get used to it way too quickly!<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>\ud83d\udcd8\ud83d\udd10 Special file: Nuki Smart Lock Ultra This article is part of my complete dossier, from installation and home automation to accessories. I replace my Danalock V3 with a Nuki Smart Lock Ultra I connect the Nuki Smart Lock Ultra to my home automation I add a Nuki Keypad 2 NFC to my lock [\u2026]<\/p>","protected":false},"author":1,"featured_media":11403,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[14,53,200,68],"tags":[],"class_list":["post-11724","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-domotique","category-home-assistant","category-matter","category-zigbee-materiels"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.sigalou-domotique.fr\/en\/wp-json\/wp\/v2\/posts\/11724","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.sigalou-domotique.fr\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.sigalou-domotique.fr\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.sigalou-domotique.fr\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.sigalou-domotique.fr\/en\/wp-json\/wp\/v2\/comments?post=11724"}],"version-history":[{"count":5,"href":"https:\/\/www.sigalou-domotique.fr\/en\/wp-json\/wp\/v2\/posts\/11724\/revisions"}],"predecessor-version":[{"id":11754,"href":"https:\/\/www.sigalou-domotique.fr\/en\/wp-json\/wp\/v2\/posts\/11724\/revisions\/11754"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.sigalou-domotique.fr\/en\/wp-json\/wp\/v2\/media\/11403"}],"wp:attachment":[{"href":"https:\/\/www.sigalou-domotique.fr\/en\/wp-json\/wp\/v2\/media?parent=11724"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.sigalou-domotique.fr\/en\/wp-json\/wp\/v2\/categories?post=11724"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.sigalou-domotique.fr\/en\/wp-json\/wp\/v2\/tags?post=11724"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}