Perpetual calendar, clock function, 12/24 hour conversionTemperature switch: Fahrenheit/Celsius conversion F/CTemperature detection function: The temperature range is -9.9C~60C (14.18F~140F), the error is 1C, the accuracy is 0.1C, and the measurement period is 10 seconds.Humidity measurement range: 0%~99%RH, error 5%rh, accuracy 1%, detection cycle 10 seconds.Backlight touch key: turn on the backlight compatible with 15 seconds and automatically turn off the battery power display, below 2.6V, the battery low power displayColor automatic environment and climate reminder:1. Dry: The humidity is less than 29%, (0%-10%, 11%-20%, 21%-29% total three gears), display the DRY icon2. Comcompatible witht: When the humidity is 30%~69%, (30%-39%, 40%-60%, 61%-69% total three gears), the COMcompatible withT icon will be displayed3. Humidity: When the humidity is greater than or equal to 70%~99%, (70%-79%, 80%-89%, 90%-99% total three gears), display WET icon temperature and humidity memory function: record the maximum and low temperature humidityMaterial: plasticcolour: WhitePackage Contents:1 x Temperature Humidity SensorOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.