Features: 1. High temperature and low temperature alarm: When the temperature exceeds the set value, the phone will alarm 2. High humidity 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 it 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 display: The sensor uses LCD as a temperature and humidity display, and the time and date are displayed on the screen. The time and date are automatically calibrated. 6. Temperature switching unit: 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 refresh rate. You can first choose the update rate for one minute, after one minute the temperature will switch to the new unit, then change the data update rate to the time you need Note: Please allow 1-3 cm deviation due to manual measurement. The actual color may be slightly different from the picture due to different monitors and lighting effects: Material: PC + electronic components Power supply: 3x AAA battery (excluding battery) Temperature accuracy: 0.3 Temperature range: -10~55. Wi-Fi support: 2.4G IEEE 802.11 b / g / n Humidity measurement range: 0%~99%RHS Humidity accuracy: 0.3%RHS Size: As shown Includes: 1x Smart WiFi Thermometer