Specification: _x005f_x000D_ Triggering alarm: sound and light are sent out, and remote opening/closing is realized through APP _x005f_x000D_ When the network or power is turned off and reconnected, the previous settings will be automatically restored using the memory function _x005f_x000D_ Battery: CR123A * 2-3V _x005f_x000D_ USB power supply: 5V/1A _x005f_x000D_ Volume: 90db _x005f_x000D_ Operating temperature: 0 ℃~40 ℃ (32 ° F~104 ° F) _x005f_x000D_ Working humidity: 20%~85% _x005f_x000D_ Wireless frequency: 2.4GHz _x005f_x000D_ Network range: 55M _x005f_x000D_ Wireless protocol: Zigbee 3.0 IEEE 802.15.4 _x005f_x000D_ Dimension: about 68x68x33mm/2.68x2.68x1.30inch _x005f_x000D_ Net weight of product: 140g _x005f_x000D_ _x005f_x000D_ _x005f_x000D_ Note: _x005f_x000D_ Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! _x005f_x000D_ Please allow 1-2cm measuring deviation due to manual measurement. _x005f_x000D_ _x005f_x000D_ _x005f_x000D_ Included: _x005f_x000D_ 1 x Alarm(No battery) _x005f_x000D_ 1 x Data cable _x005f_x000D_ 1 x Instructions _x005f_x000D_ 1 x Sticker Screw Pack _x005f_x000D_ 1 x Packing box 1. Tuya ZigBee Siren: Detecting in the environment in time. Siren alarm louder than 90DB. 2. Alarm Notifications: Smart phone will get instant notifications when siren alarm triggered and check the log on APP. Widely used in home, kitchen,office, etc. 3. Fast Response: Ultra-fast response, anti-interference ability, ultra-low power consumption and cost-effective. Supporting 5V 1A USB port power. 4. Security System: Trigger alarm; Make sound and light; Remote on/off via APP. Automatically restore the previous settings with memory function when network or power off reconnecting.