Indicator: Hygrometer has and alerts. Display different prompts according to changes in indoor temperature and humidity. It records the highest and lowest humidity and temperature indicators for a 24-hour period.Clear LCD Display: The digital thermometer adopts LCD screen, which is designed with a backlight function, making it easier to read data in dark conditions.Designed with a / switch button, you can switch between Celsius or Fahrenheit at will.Multi-Scenario Use: The digital hygrometer ensures proper temperature and humidity control, can be placed in bedrooms, baby rooms, kitchens, cellars, offices, wine cellars, conservatories and living rooms.Multiple installation methods: The indoor thermometer adopts magnet adsorption, desktop vertical and wall-mounted . You can easily place this hygrometer in different .Measuring rangeIndoor temperature: 14F~122F (-10~50)Outdoor temperature: -40F~158F (-40~70C)Temperature display unit: /F optionalTemperature Resolution: 0.1C/FHumidity resolution: 1%Humidity: 20%~95%Wireless receiving range: 328ft/100m (open space)Wireless frequency: 433 MHzpower supply :Display: 2 AAA1.5V batteries Sensor: 2 AAA 1.5V batteries (batteries not included)Orange backlight: automatically turn off in 10 secondsMaterial: ABScolour: BlackPackage Contents:1 x Monitor1 x SensorOnly the above package content, other are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.