[Temperature and humidity readings]: The room hygrometer thermometer monitors humidity and temperature. It also shows the current status of the air conditioner, ensuring that the temperature and humidity are properly controlled, which is good for skin and allergens, and even gives you clues as to whether you need to adjust the thermostat or thermostat.'' Turns the humidifier on/off. [Backlight]: The room hygrometer with 4.0" LCD display provides a backlight for easy reading in low light conditions and is very easy to use. [Record High/Low]: The digital hygrometer automatically updates the maximum and minimum temperature and humidity records every 10 seconds in both modes (ALL TIME / 24 HOUR), so you don't need to monitor a specific date or time period. Changes in temperature and humidity, as well as trend icons with arrows for each reading, are also displayed, giving you a clearer picture of your surroundings. [Multiple mounting options]: Humidity and temperature are available in desktop, wall and magnetic mounting designs for easy installation in any room. F / C selection; powered by one AAA battery (not included). [Accuracy]: Room thermometer accurate to 1C and 2%-3% relative humidity, ideal for living rooms, nurseries, kitchens, conservatories, guitar rooms, offices and cellars. This easy to read thermometer and hygrometer is the ideal way to monitor temperature and humidity. It is made from high quality materials and has a long life span. It also has a foldable stand and a magnetic back for easy installation. It offers a variety of useful features and options. Dimensions: 5.8*7.5*1.9cm Temperature range: 0C - 60C Humidity range: 10% -99% Comfort display: dry (humidity below 30%); comfortable (humidity between 30% and 60%); humid (humidity above 60%) Temperature display in: C and F adjustable Temperature resolution: 0.1C/F Humidity resolution: 1 Update time: 10 seconds Package contains: 1 thermometer and hygrometer