Features: 1.Adopts advanced signal analysis and processing technology, provides ultra?high precision detection and anti?false performance, ensure the stability of the product. 2.When the temperature and humidity of the environment are detected to exceed the set upper and lower limits, it will transmit the alarm signal to the mobile phone APP through WiFi for notification. 3.With digital display screen and remote APP two ways to view the current real?time temperature and humidity data, even if you are not at home, you can view the temperature changes at any time. 4.With the function of online export of temperature and humidity data, enter the interface of APP temperature device? lower right corner?view temperature trend?export data, input the email to export. 5.Suitable for family residential area, houses, villa, workshop, machine room , warehouse, office building and other places. Specification: Item Type: Temperature humidity alarm_x000D_ Material: ABS_x000D_ Power Supply Voltage: AC 100-240V_x000D_ Battery Model: 600mAh (included)_x000D_ Standby Time: Approx. 4 hours_x000D_ Detection Temperature: -20 - + 80_x000D_ Detect Humidity: 0% - 100%_x000D_ Temperature and Humidity Accuracy: 0.5 / 1% RH_x000D_ Measurement Error: 1 / 3% RH PackageList: 1 x_x000D_ _x000D_ Temperature Humidity Alarm 1 xPlug 2 xScrew 2 x Nut 1 x Manual Note: Please access the 2.4G WiFi correctly.