For a healthy indoor climate: with the practical room thermometer, you can keep an eye on the temperature and humidity through the clear display and now you have control over the room climate in the rooms, e.g. living room, bedroom, children's room, office and storage roomAdvanced high-precision sensor: built-in with accurate and sensitive sensor, the thermo-hygrometer updates the temperature and humidity every 10 seconds; measuring range of temperature: -50 ~ 70 Celsius, optionally in Celsius and Fahrenheit; Humidity: 10% ~ 99%Smiley as a comfort indicator: the humidity meter shows the state of the room climate in three symbols with neutral, laughing and sad face, whether the values are moving within the recommended range or action is requiredFlexible installation: you can either place this room thermometer through the fold-out stand or mount it on the wall through the hanging hole on the back; thanks to the integrated magnet, the inner hygrometer can also be attached to metal surfaceEnergy-saving batteries: 1.5 V AAA batteries are included; the batteries usually support 18 to 24 months of use