Features: 1. High and low temperature alarm: When the temperature exceeds the set value, the phone will alarm. 2. High and low humidity alarm: When the set humidity value is exceeded, the phone will alarm. 3. Temperature and humidity curve: Record temperature and humidity changes in the app and present them to you with graphics. More intuitive to inform you of the latest data changes. 4. Multiple installation methods: It can be placed directly on the table or hung on the wall. There is no data cable, so it is more convenient and beautiful. 5. LCD screen: The sensor uses LCD as the temperature and humidity display, and the time and date are displayed on the screen. Time and date are automatically calibrated. 6. Temperature unit switching: The sensor is designed with a display conversion function for Celsius and Fahrenheit. You can choose which unit to display according to your needs. The switching speed is related to the set data update frequency. You can first select the update frequency of one minute, after one minute the temperature will switch to the new unit, and then change the data update frequency to the time you need. Note: Please allow 1-3 cm deviation due to manual measurement. The actual color may differ slightly from the image due to different monitors and light effects. Material: PC + electronic components Power supply: 3x AAA battery (excluding battery) Temperature accuracy: 0.3 Temperature measurement range: -10~55. Wi-Fi support: 2.4G IEEE 802.11 b/g/n Humidity measurement range: 0%~99%RH Humidity accuracy: 0.3%RH Size: As shown Includes: 1x Smart WiFi Thermometer