This sensor can be used to detect temperature changes, it can display the real-time detected temperature and humidity. The sensor will sends ambient temperature and humidity signals to the background through the WiFi network, and the background will transmits it to your mobile phone. You can remote monitoring through your mobile phone, and support control the temperature by Tuya APP. Suitable for home, bank, hotel, and office and etc..   Features: Adopts radio transmitting circuit and coding technology to solve the problem of signal interference blocking.  Various temperature modes adjustable, suitable for different scenarios, easy to adjust according to your demands.  The data signals are wireless transmitted, you can remote monitoring through your mobile phone, and support control the temperature by Tuya APP.  Powered by 3*AA battery, low power consumption, with long battery life.  Equipped with low voltage monitoring prompt function, so that you can change batteries in time.  Equipped with alarm function, automatic send online reports to your phone when the temperature is too high/low, during conditions of high humidity/too dry.  Anti-disassembly design in professional field.  Split design, with high reliability.   Specifications: Name: Temperature Sensor;  Material: ABS;  Communication-method: WiFi;  Wi-Fi standard: 802.11b/g/n;  Channel: 1-14 at 2.4GHz;  Power supply: DC4.5V (AA * 3 battery, not included);  Communication distance: 70 meters (open);  Installation method: desktop placement;  Temperature: -10℃ to 55℃;  Humidity: 0-100%RH;  Item size: 64 * 64 * 28mm / 2.52 * 2.52 * 1.10in;  Package size: 68 * 68 * 50mm / 2.68 * 2.68 * 1.97in;  Package weight: 160g / 5.64ounce;   Packing List: 1 * Temperature Sensor