1. Tuya WiFi smoke alarm has dual emission and one reception to prevent false alarms. When the smoke reaches a certain concentration, the smoke detector immediately emits an 85db alarm sound.2. When the smoke alarm detects smoke, the bound contact can receive an alarm reminder. Through the 2.4 GHZ Wi-fi connection, you can easily check all relevant information of the smoke detector.3. Tuya WiFi smoke alarm is safe, convenient and flexible to control your home security anytime and anywhere. The built-in anti-insect screen design can effectively prevent mosquitoes from triggering the alarm.4. Long-term use: Our battery uses high-quality CR17505 3V lithium battery, which has a service life of up to ten years. There is no need to replace the battery during the life cycle.5. Function: It can be connected to multiple wireless Internet models and connected to WiFi to achieve multiple simultaneous alarms and remote mobile phone notifications. It has phone alarms, SMS alarms, APP push and other notification methods, and can be remotely silenced.Specification:Working voltage: DC3.6 (V)Alarm current: 35mA (mA)Working temperature: -10-+50 ()Quiescent current: 12uA (uA)Detection angle: 360Detection distance: 30 (m)Type: Smoke alarm detectorTransmission frequency: 2.4GHz (MHZ)Launch distance: 5 (m)Action distance: 2 (mm)Alarm method: LED prompt + buzzer + APP alarmSupport Tuya APPMaterial: ABSBattery: High-quality CR17505 3V 10-year lithium battery, no need to replace the battery during the life cycleStandby time: 10 years