Features:   1. Tuya Zigbee T&H&Siren 3 IN 1 Sensor: Detecting temperature and humidity in the environment in time. Siren alarm louder than 90DB.   2. APP Real-time Temperature and Humidity Report: With the gateway and cloud platform docking, perception of temperature and humidity changes and real-time report to the users phone.   3. 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.   4. Smart Scenarios: It can also be combined with other smart WIFI products based on Tuya to design and implement smart application scenarios.   5. Quick response, anti-interference ability, ultra-low power consumption and cost-effective. Supporting 5V 1A USB port power.      Specifications:  Alarm Mode: Sound Light Alarm;  Detection Humidity: 0% ~ 100%;  Anti Disassembly Function: Yes;  Wireless Frequency: 2.4GHz;  Battery: CR123A 3V * 2;  Communication Protocol: ZigBee;  USB Port: 5V / 1A;  Wireless Standard: IEEE 802.11b/q/n;  Sound dB: 90dB;  Wireless Ranges: 40 Meters;  Standby Current: 61ua-180ua;  Size: 68 * 68 * 32mm;  Detection Temperature: - 10 ° C ~ 80 ° C