Product name: Zigbee Sound and light alarmProduct size: 72 * 72 * 31mmPackaging weight: 0.1KG/pieceWireless protocol: 2.4G Zigbee IEEE 802.15.4Battery capacity: 400M Н ACharging voltage: 5V-1ACharging duration: 2 hoursPower off standby: 24 hoursWorking temperature: -10-55 ℃Working humidity: 0% -95% RH (Non condensing) Specifications: *Tuya ZigBee: Alarm 2 IN 1 sensor: Timely detection of conditions in the environment. Siren alarm sound is greater than 100DB. *Alarm Notification: Smartphone will get instant notification when the alarm is triggered and view the log on the APP. Widely used in home, kitchen, office, etc. *Smart Scenario: It can also be combined with other Tuya-based smart WIFI products to design and implement smart application scenarios. * Ultra-fast response, strong anti-interference capability, ultra-low power consumption and high cost performance. Support 5V 1A USB port power supply, with rechargeable backup battery can last 24 hours even if the power is off Has 8 kinds of alarm sound, 5 kinds of alarm (door magnetic abnormal, water level abnormal, temperature and humidity abnormal, smoke abnormal, human intrusion abnormal) Package Included: 1*Sensor 1*Data cable 1*Instruction manual