1. Power supply: 3.7V/1000mAh
2. Operating temperature: 0 degrees Celsius to 45 degrees Celsius
3. Air volume measurement range: 0-999900CMM
4. Wind speed measurement range: 0-8800 feet/minute
5. Operating humidity: 40-85%RH
6. Storage humidity: 10%-90%
7. The handle can be stretched for long-distance measurement, and the length can be stretched to 533mm
8. Support five wind speed unit selections, manual/automatic shutdown
9. Support data retention, LCD backlight display
2. Operating temperature: 0 degrees Celsius to 45 degrees Celsius
3. Air volume measurement range: 0-999900CMM
4. Wind speed measurement range: 0-8800 feet/minute
5. Operating humidity: 40-85%RH
6. Storage humidity: 10%-90%
7. The handle can be stretched for long-distance measurement, and the length can be stretched to 533mm
8. Support five wind speed unit selections, manual/automatic shutdown
9. Support data retention, LCD backlight display