Hanna Instruments HI 9565 Hygrometer

Ideal for use in extreme environments.
The humidity probes features a processor
which stores the calibration information.
This allows interchangeability between meters without recalibration.
HI 9564
    Measures temperature and relative humidity.
    Temperature may be displayed in degrees Celsius (°C) or
    Fahrenheit (°F)
    Automatic shut-off.
HI 9565
    Dew point calculation.
Supplied with:
    RH probe: HI 70602
    Rugged blue case: HI 710009
    Instruction manual