I dissasembled and tested the Heiman Zigbee Siren HS2WD-E, this is my review : r/homeassistant

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Tests

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Heiman ZigBee Alarm Siren HS2WD-E Review - SmartHomeScene

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Tests

Heiman ZigBee Alarm Siren HS2WD-E Review - SmartHomeScene

Heiman HS2WD-E siren installed in ZHA integration stopped working