• Make / Model : HEIMANN MA420-63E (HS2WD-EJ)
• Type : Indoor siren Zigbee 3.0
• Power supply : 230V power outlet with integrated battery for operation in the event of a cut-off
• Protocol : Zigbee 3.0 – compatible with Zigbee2MQTT and Home Assistant (via MQTT/ZHA)
• Noise levels : Up to 95 dB (indoor)
• Sound effects : Modes burglar, fire, emergency, police_panic, fire_panic, emergency_panic
• Stroboscope : Flashing red LED with adjustable intensity and cycle (strobe_level, strobe_duty_cycle)
• Orders : Triggering/stopping via MQTT commands or siren entity Home Assistant
• Installation : Directly on an interior wall outlet
• Use : Indoor alarm siren for home security scenarios

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