1. Display: 34x31mm, four-numbers display, maximum 1999 2. Temperature range: -20 to 60 degrees Celsius (-4 to 140 degrees Fahrenheit) 3. Relative humidity range: 0 to 100%RH 4. Sensor: Zhongke Galaxy chip GXHTC3 5. Sampling rate: 8 times per second 6. Update rate: 3 times per second 7. Automatic shutdown: 15 minutes of no operation 8. Working environment: -10 to 50 degrees Celsius, no more than 80% relative humidity, indoor altitude less than 2000m 9. Storage environment: -10 to 50 degrees Celsius, no more than 70% relative humidity 10. Power supply: 2 x 1.5V AAA batteries (not included) 11. Dimensions: 167x59x29mm 12. Net weight: about 98g
