Key Features: ? LC display shows any two of: %RH, temperature and calculated parameter (keypad selection) ? Full range of psychrometric calculations: dew point, frost point, wet-bulb temperature, mixing ratio, etc. ? Unit system (metric or English) selectable from the keypad ? Two probe inputs: - Input 1: HygroClip probe (not compatible with HygroClip 2 - AirChip 3000 probes) - Input 2: HygroClip probe (HygroPalm 2 or 3) or analog probe (HygroPalm 3 only - pressure, air-flow etc) ? HygroPalm 3 only: dynamic pressure compensation of calculated parameter (requires pressure probe) ? Multipoint probe adjustment directly from keypad ? 1-point transmitter adjustment against probe connected to input 1 (except AirChip 3000 transmitters) ? RS232 PC interface for data logging