General Description The mini hygrometer thermometer is a compact and practical device for measuring the temperature and humidity of your environment. It is ideal for use in various spaces such as the living room, children's room, office, and garage. Technical Specifications Temperature range: -50℃ to +70℃ Temperature accuracy: ±1.0℃ Humidity range: 10% to 99% relative humidity Humidity accuracy: ±5% RH Humidity indication: smiley for 40% < Humidity < 70%; sad face for humidity 70% Temperature display only in Celsius (°C) Compatibility and Accessories Included: 4 mini hygrometer thermometers 4 round adhesive tapes 1 user manual 1 CR2032 battery included Installation For easy installation, use the included adhesive tape to attach the hygrometer thermometer to your wall or a flat surface. Make sure it is placed in a location where it can accurately measure temperature and humidity, away from sources of direct heat or excessive moisture. Usage Turn on the device to start