100% brand new and high quality Wireless sound and light alarm security alarm sensor supports smart life home Features. < p>Tuya ZigBee T H Siren 2 IN 1 sensor: detects the environment in time. Siren sound above 90DB. Alarm notification: The smartphone will be notified immediately when the siren alarm is triggered, and check the log on the APP. Widely used in homes, kitchens, offices, etc. Smart scenarios: Smart application scenarios can also be designed and implemented together with other Graffiti-based smart WIFI products. Energy saving: Ultra-fast response, strong anti-interference ability, ultra-low power consumption and high-cost performance. Support 5V 1A power supply USB port. Specifications. Standby current: 61uA-180uA USB port: 5V/1A power supply: USB plug-in or CR123A battery*2 (battery not included) sound intensity: 90db detection temperature: -10C - 80C Humidity detection: 0% -100% Wireless Frequency: 2.4GHZ Communication protocol: Zigbee 3.0 Wireless Standard: Zigbee IEEE 802.15.4 Wireless Range : 40m Housing material: Size: 68*33mm Product includes 1* Alarm Sensor Notes. Due to different monitors and lighting effects, the actual color of the the item may vary slightly from the color shown in the picture. Thank you. Due to manual measurement, please allow 1-2cm deviation in measurement.