NOTES : 1. Battery life is calculated on cu rent ratings in the weekly test mode and standby mode . if the operation mode changes to and an alarming condition , the battery life . be decreased accordingly . 2. This functions between 0 and 55. Prolonged exposure to lower or higher temperatures can reduce battery life and affect device performance . We do not recommend operating the device outside of this temperature range . 3. Before installation,we recommend you test the WiFi alarm sin the rooms you wish to install them in to they are with in range of the WiFi router that is interfering with their communication. 4. The test function accurately tests the alarm ' s smoke sensing circuit without the need to test with smoke . If your fails to give an audible , please refer immediately to the trouble guide at of this manual . Never use an open flame to test this device. 5. Silence Function :If there is a false alarm,you can temporarily silence it by pressing the Silence button on the app or by pressing the Test&Silence button on the device.The silence duration usually lasts for 10minutes.After that,the device return to standby mode,provided that the smoke concentration has dropped below the alarm level. Hign-concerned Chemical: None Model Number: S08W Smart home platform: Tuya Type: Smoke Detector Operating Life: 10 years Sensor Type: Photoelectric Safety Standard: EN 14604:2005+ AC :2008 Standby Current: Less than 15 ( avg .) Alarm Current: Less than 100 mA ( avg .) Coverage Area: 20-40 Operating Ambient Temperature: (0-55) Operating Relative Humidity: less than equal85%( non - condensing ) Alarm Loudness: equal85 dB at (3 meters)@3.20.3 kHz pulsing alarm APP: Smart Life/Tuya Wireless Frequency: 2.4GHz( Incompatible with 5 GHz Wi - Fi network ) Specification: B Without battery Color: As Shown Material: Plastic Package Contents: 1 * Tuya Fire Smoke Detector Sensor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.