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TUYA wireless photoelectric smoke detector, Wi-Fi&#x4; &#x4; Features: &#x4; This smart wireless photoelectric smoke sensor detects smoke from any side. It triggers an acoustic-optic alarm and via Wi-Fi sends alert messages with TUYA app.&#x4; The smoke detector is connected and configured directly via the Tuya Smart or Smart Life app.&#x4; No additional control panels required, no devices, just 2.4GHz wireless internet and a smart Android or iOS device.&#x4; The app’s event log allows you to review alarm history and battery status. It sends instant notifications to your phone not only when smoke is detected, but also in case of low battery or test events.&#x4; Very convenient and easy to use! Lightweight and compact, with low power consumption.&#x4; It is recommended to install the detector on the ceiling in the center of the room for more effective smoke detection, 30 cm away from light fixtures (and at least 1.5 m from fluorescent lights) and at least 15 cm from walls and corners. Install away from fans, radiators, or air conditioners and avoid humid or dusty environments.&#x4; Voice control is compatible with Alexa and Google Assistant.&#x4; Three AA batteries provide up to about 10 years of standby time (batteries included). End-of-life is indicated by 3 short beeps every 43 seconds.&#x4; It is recommended to install the smoke detector within 10 meters of the Wi-Fi router.&#x4; The device should be tested once a week by pressing the TEST button.&#x4; &#x4; Specifications: &#x4; Power supply: 3× 1.5 V AA batteries (included).&#x4; App: TuyaSmart (Android, iOS).&#x4; Response time: < 10 s.&#x4; Sound alarm: >85 dB at 3 m.&#x4; Flashing alarm: red LED.&#x4; Alarm current: