FeaturesMeasure temperature humidity. With large LCD display for easy reading the data.High accuracy and fast response providing updated and accurate readings./H switchable easy to change temperature display unit as you like just by pressing the button of /H.Features backlight and touchscreen turn the backlight on/off making it easy for reading in the dark.Auto-off within 15s.All time/24 HRs Button. Press ALL TIME/24 HRs button you can check temperature/humidity in the past or last 24 hours Press for 3 seconds you can clear the record max and min humidity/temperatur readings.Multiple mounting modes. This thermometer features tabletop wall-mountable and magnet-mountable design convenient mounting feature for every type of room.Easy to operate. Powered by 2 1.5V AAA batterysnot included.