Description: 2-in-1: This kind of sensor can be used to detect the temperature and humidity at the same time, meeting your different needs, you can order according to your needs. Wireless: The thermometer adopts WiFi 2.4GHz technology, which is convenient for you to connect it to your phone, and it will send messages to your phone on a regular basis, making your use easier. Adjustable: Also, you can reset the temperature as your like, suitable for different occasions. When the temperature is too high or too low, it will remind you through phone APP, and it will remind you of the low voltage detection. Digital display: This hygrometer has a large screen that can show you the data clearly, easy to read and identify, you can place it on the desktop without worries. Battery operated: This temperature humidity gauge is powered by 3x AAA batteries(not included), you do not need to charge it because you just need to change the battery after use, saving time and strength. Specification: Material: ABS. Color: show as pictures. Size: show as pictures. Wireless: WiFi 2.4G. Work temperature/humidity: -10-55℃, 0-100%RH. Power supply: 3x AAA batteries(not included). Voltage: DC 4.5V. Note: Due to the light and screen difference, the item's color may be slightly different from the pictures. Please allow ±0.5 deviation for the measurement data and make sure you do not mind before ordering. Package Includes: 1 Piece Temperature Humidity Sensor(with 1 Piece Instruction).