Extech Digital Psychrometer Kit Model RH305

This versatile instrument simultaneously displays %RH and temperature along with dew point, wet bulb, or probe temperature. The instrument also calculates T1-T2 differential (air temperature minus external probe temperature) using the temperature probe and T2-dew point. Other features include switchable °F/°C temperature units, data hold to freeze the current reading on the display, max/min readings, and auto power off. The unique sensor cap design twists closed to ensure protection during storage. Kit includes digital psychrometer, 2 AAA batteries, temperature probe, 33% and 75% calibration bottles, and a carrying case. One-year warranty from the manufacturer.