EXTECH® Digital Psychrometer

One Instrument Measures Wet Bulb, Dew Point and Temperature

Simultaneously displays %RH and temperature, plus dew point, wet bulb or probe temperature. Calculates T1-T2 differential with Thermistor Temperature Probe (sold separately). Simply twist sensor cap for protection in storage. Data hold maintains current reading on display. Features max./min. readings and auto power-off. The Digital Psychrometer includes two AAA batteries.