{"id":8494,"date":"2025-04-05T14:58:54","date_gmt":"2025-04-05T12:58:54","guid":{"rendered":"https:\/\/www.sigalou-domotique.fr\/?p=8494"},"modified":"2026-01-01T18:12:34","modified_gmt":"2026-01-01T16:12:34","slug":"je-teste-le-capteur-de-niveau-zigbee-par-ultrasons-me201wz-de-chez-moray","status":"publish","type":"post","link":"https:\/\/www.sigalou-domotique.fr\/en\/je-teste-le-capteur-de-niveau-zigbee-par-ultrasons-me201wz-de-chez-moray","title":{"rendered":"I am testing the ME201WZ Zigbee ultrasonic level sensor from MORAY"},"content":{"rendered":"

\"Moray<\/p>\n

I need to monitor the water level of my buried tank. So I chose the Zigbee ultrasonic level sensor ME201WZ<\/a> Moray 's<\/strong>. This small device measures the distance by ultrasound and accurately indicates the level of the liquid remaining in the tank. What I appreciate right away: simple installation, robustness, minimal maintenance, and above all a mains power supply (I no longer have to manage batteries).<\/p>\n

Originally, this sensor was designed for the Tuya Smart\/Smart Life application, but I prefer to integrate it into Zigbee2MQTT<\/strong> to keep full control of my home automation equipment.<\/p>\n

<\/p>\n

<\/p>\n\n\n\n
\"Dashboard<\/td>\n\"Dashboard<\/td>\n\"Dashboard<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\ud83d\uded2 Where to buy this equipment?<\/h2>\n

Here is the link to the page dedicated to\u00a0ME201WZ<\/a> . I referenced the sellers and prices.<\/p>\n

\ud83d\udce6 I check the contents of the package<\/h2>\n

At the reception, I unpack everything: the sensor, the fixing screws and the manual are there. Nothing is missing.<\/p>\n

\"Unpacking<\/p>\n

\"Moray<\/p>\n

\"Package<\/p>\n

\ud83c\udfe1 Advice before installation<\/h2>\n

I recommend pairing the sensor before<\/strong> attach it to the tank, as the pairing button is underneath the appliance. I check the compatibility of the cover, and I prepare the passage of the mains cable.<\/p>\n

\ud83d\udd17 I pair the sensor to Zigbee2MQTT<\/h2>\n

I plug the sensor into the mains and then press the pairing button (under the sensor) for 5 seconds until the LED flashes quickly. It took me three tries to succeed: You have to be patient! As soon as Zigbee2MQTT detects the sensor, I can proceed.<\/p>\n

\"Pairing<\/p>\n

\"Zigbee2MQTT<\/p>\n

\"Zigbee2MQTT<\/p>\n

\ud83d\udd28 I install the sensor on the tank<\/h2>\n

My buried tank has two lids. I attach the sensor to one of them, just above the access well.<\/p>\n

I start by measuring the diameter of the lid to choose the right flash saw. I make the opening, fix the sensor and close the whole thing. Here are the steps in pictures:<\/p>\n

\"Cuve\"<\/p>\n

\"Diameter<\/p>\n

\"Bell<\/p>\n

\"Wells\"<\/p>\n

\"Installation<\/p>\n

\"Installation<\/p>\n

\"Installation<\/p>\n

\"Installation<\/p>\n

\"Installation<\/p>\n

\"Installation<\/p>\n

\"Installation<\/p>\n

\"Final<\/p>\n

I measure the depth of the tank (1.5 m) and the current height of water (1.2 m): I will be able to configure the sensor precisely.<\/p>\n

\u2699 I configure the reference levels<\/h2>\n

The manual details the procedure for entering the mini and maxi levels. I note my measurements and notes on the manual. I had some formatting issues in Zigbee2MQTT, but the configuration worked smoothly in Home Assistant.<\/p>\n

\"Manual<\/p>\n

\"Configuration<\/p>\n

Once set up, the sensor sends consistent and reliable data.<\/p>\n

\ud83d\udce1 I check the Zigbee connection<\/h2>\n

My vat is 15 metres from the house: I monitor the connection quality (LQI around 150). I noticed frequent disconnections (approximately one per hour). I add a Zigbee Aeotec repeater, the LQI climbs to 248, but the cuts persist \u2026 Fortunately, they only last a few seconds and do not interfere with data collection.<\/p>\n

\"LQI<\/p>\n

\"Log<\/p>\n

Update:<\/strong> with the repeater Aeotec Range Extender Zi WG001<\/a>, LQI at 248, but still some cuts (without annoying impact).<\/p>\n

\"LQI<\/p>\n

\"Persistent<\/p>\n

\ud83d\udd0e I check the recovered data<\/h2>\n

The sensor shall provide:<\/p>\n

\"Sensor<\/p>\n