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 on the APP, and present it to you with graphics. More intuitive to let you know 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 temperature and humidity display, and time and date are displayed on the screen. Time and date are automatically calibrated. 6. Temperature switching unit: The sensor is designed with a Celsius and Fahrenheit display conversion function. 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 choose the update frequency for one minute, after one minute the temperature will switch to the new unit, then change the data update frequency to the time you need Note: Please allow 1-3cm deviation due to manual measurement. Actual color may be slightly different from the image due to different monitor and light effect Description: Material: PC + electronic components Power supply: 3x AAA battery (excluding battery) Temperature accuracy: 0.3 Temperature range: -10~55 Support Wi-Fi: 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