Features1Comfort Level Indicator: This room thermometer adopts comfort level indicator which ensures proper temperature control, help you maintain a comfortable environment in your home. 2Large Screen: This humidity sensor adopts large screen, reading more easily under different environment. 3High Accuracy: This digital hygrometer is pre calibrated to enable accurate temperature and humidity measurements. Room temperature meter displays high and low records for the past 24 hours and all times 4Easy Installation: This digital thermometer can be easily attached to you fridge, wall and table. 5Wide Application: This indoor thermometer is suitable for baby room, nursery, office, closet, incubator, greenhouse, garden, cellar, basement, glass container, etc.SpecificationItem Type: Room ThermometerMaterial: ABS, AluminiumOpen Area Transmission Distance: 90 Meters / 98.43ydFrequency: 433.9MHZUpdate Rate: 60SIndoor Temperature Range: 0 to 60Outdoor Temperature Range: Minus 40 to 60Indoor Accuracy: 1Indoor Humidity Range: 10 to 99%Outdoor Humidity Accuracy: 5%Battery: 4 x 1.5V AAA Battery (Battery Not Included)Weight: Approx. 180g / 6.35ozPackage List1 xRoom Thermometer(Battery Not Included) 1 x User Manual