AMTAST Digital Thermometer Hygrometer is a great helper for you to measure environmental temperature and humidity. You can use it in various sites. 
For example, you can check the performance of heating and air conditioning equipment to create a comfortable working environment and check the plants' living condition to let them grow well.

SPECIFICATIONS
1. Measure Parameters: °C, °F, %RH (relative humidity), dew point temperature
2. Measuring Range: -10 ~ +50°C, +14 ~ +122°F, 0 ~100%RH 
3. Resolution: 0.1°C, 0.1°F; 0.1%RH 
4. Accuracy: ±1.0°C, ±1.8°F, ±3%RH (5~95%RH) 
5. Sample Rate: 1 time sec 
6. Display: 4 digits LCD Display 
7. Auto Power Off: About 20min 
9. Dimension: 4.76” x 2.36” x 1.18” 
10. Weight: 0.4LBS
11. Power Supply: DC1.5V (AAA) Battery x 3pcs (Batteries NOT Included)

Please Kindly Know: Batteries are not included in the package due to Aviation Security Check. Sorry for any inconvenience caused.