Works with Tuya (Smart Life) ZigBee Hub for home automation systems (Please note: this is not a WiFi product, it cannot connect directly to a WiFi router, it must work via Tuya ZigBee Gateway Hub. Thank you.) Real-time display of temperature and humidity Simple and elegant design with battery operation (Without battery, the battery is removed in advance for safety reasons.) Easy to stick anywhere with sticker and back The \"If ... Then\" function refers to working in Tuya smart products and does not support any other brand of smart products. Specification: Communication method: ZigBee Dimensions: 61.2 * 23 mm Working temperature: -10 50 ℃ Power supply: DC3V (AAA battery * 2, not included) Function: determine whether the infrared light emitted from the human body is moving to detect the presence of the human body in the defense area Technical data: 1. Radio transmission circuit and coding technology to solve the problem of signal interference blocking 2. Various temperature modes can be set to suit different scenarios. 3. Wireless data signal transmission, remote monitoring of mobile phone. 4. Ultra-low energy consumption and long battery life. 5. With low energy consumption, voltage monitoring function 6. Send regular online reports to the host. 7. Anti-dismantling design in the field of professional security. 8. Shared design, high reliability. When the temperature has dropped to 26 degrees, the air conditioning is automatically turned off. Lots of fun crafts to try and rent. If you received the products with the scratched screen, don't worry, there is a thin protective film on top of the screen. Just remove it (use your fingernails) and the screen is normal glass. The 2 AAA batteries are not included