Description Product Description Temperature Range: 0 To 50C. Temperature Measurement Accuracy: +1.0 Humidity Range: 10% -99% Accuracy Of Measured Humidity: +5% Sampling Cycle: 10 Seconds Display Resolution: 0.1 Size: 45 X 15 (Mm) Power: 0.15Mw Under Working Conditions Battery: 1 X 1.5V Ag13/Lr44 Button Battery Package Includes: 2 X Digital Hygrometer Thermometers 1. [Measurement Range]: Temperature Range: -20C 70C; Temperature Deviation: 1 C. Humidity Range: 20%~90% Rh; Humidity Deviation: 5% Rh. 2. [Mini\U0026 Simple Design]: With The Mini Case And Round Shape, The Device Can Be Placed Discreetly Anywhere. With The Simplest Appearance And Very Practical Function. With The Round Digital Humidity Thermometer, You Can Easily Determine The Room Temperature And Moisture.Small And Light Enough To Save Space And Carry. 3. Wide Use]: You Can Use It At Home, In The Office, In The Car, In The School, In The Hotel, In The Laboratory, In The Kindergarten, In Aquaculture, In The Instrument Workshop, In The Garage, In The Garden House, In The Box For 3D Printer Filaments And In Places With Air Conditioning Etc. 4. [Built-In Thermometer]: Help Measure Indoor Humidity And Temperature Over Time, Adjust Humidifier, Dehumidifier Settings And Humidifier, And Monitor Family Living Conditions And Health For Colds, Dry Skin, Asthma And Mold Prevention.