1Thermometer hygrometer with temperature and humidity monitor ensures proper indoor humidity control is beneficial to skin, allergens and other health. 2Can be used as refrigerator thermometer, freezing thermometer, reptile thermometer, soil thermometer, cigar hygrometer and cigar hygrometer, which can meet your various needs. 3The temperature and humidity can be monitored remotely via a smart phone. Help take care of your house when you are not at home, Once the data exceeds the preset range, the app will push you an alert notification. 4The wireless digital indoor hygrometer thermometer adopts a clear LCD screen design, which is convenient for you to check and can provide a smart life for you. 5You can view the current hygrometer and thermometer on the LCD display, and you can also obtain current and historical data through the APP, even though you are not at home. Item Type: TemperatureandHumiditySensor Material: ABS Battery: 2PCS Battery 1.5V AA (without Battery) Usb Power Supply: DC5V /1A Detection Temperature: -10-60 Detection Humidity: 0-100% Illumination: 0-157000Lux Wireless Frequency: 2.4GHZ Communication Protocol: Zigbee 3.0 Wireless Standard: IEEE802.11B/Q/N Wireless Range: Approx. 25m / 82.1ft 1 xTemperatureandHumiditySensor 1 x Manual