Model ADHT-ExFeatures :3 Wire, 4-20mA, 24V Dewpoint TransmitterIntrinsically Safe - ATEX II 1G / EEx ia IIC T6Overall Range -110 C to +20 C DewpointAccuracy 2 C Dewpoint (or equivalent)Calibrated in C, F or ppm(v)Polarity Protected InputWeatherproof Rating - IP65Open / Short Circuit DetectionBuilt-in Temperature CompensationHigh Resolution Measurement CircuitryCalibration Traceable to National International Standards