Product Description Material: ABS Size: 43 * 43 mm color: White Quantity: 1 piece Package content: 1 piece *Temperature meter 1. [Hydrometer Humidity Digital] LCD display, bright light source, better readable thermometer inside and humidity. Through smiling or unhappy expressions, you can directly understand the temperature and humidity around you. 2. [Swiss high-precision digital sensor] Equipped with high-precision temperature and humidity sensor, which is updated once per second and provides more accurate and faster data. The temperature error can be 0.1 C and the humidity error 1%. 3. [Mini Thermo Hygrometer] You can easily attach the magnetic holder to multiple surfaces as a holder or adhesive pad. Bluetooth thermometer hygrometer is very suitable for placing in any room, size: 43 * 43 mm, can also be carried at any time without taking up space. 4. [Use smart device] Via Bluetooth gateway, the Bluetooth thermometer can be connected to other smart devices in the household to intelligently improve indoor cooling, heating and dryness, lead a smart and healthy life and make your home more comfortable to design. (Note: Bluetooth gateway must be purchased separately.) 5. [Storage of temperature and humidity data]the "App", add the device bluetooth thermometer, you can view the temperature and humidity curve in real time, and the data will be saved in the thermometer case and in the cloud.