Calibration
At most 2 point, (water vapor saturated air/zero oxygen solution) Power supply
DC6V/20mA; 4 x AA/LR6 1.5 V or NiMH 1.2 V and chargable Working condition Relative humidity
5%...80% (without condensate) Working condition Pollution grade
Data storage
Calibration data;99 groups measurement data Working condition Altitude