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Tuya Wifi Independent Photoelectric Sensor Smoke Detector Fire Protecting Sound Light Fire Alarm

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Tuya Smart WiFi Fire Detector Smoke Alarm Sensor Smoke & Carbon Monoxide Composite Home Remote Alarm Without Battery

Class 2 5 Fire Alarm 3 Smoke Prevention BVJ420503H P-type Receiver, Lines, Lines,

Smoke Sensor Module Switch PVC Light Sound Alarm Smoke Detector Alarm Module for Kitchen Hotel DC5‑3