Intended for HVACR technicians, Model EP8711P can measure/calculate ambient temperature, RH, dew point, wet bulb temperature, absolute humidity, and enthalpy. Instrument is designed for in-duct measurements upstream and downstream of evaporator unit to determine HVACR system’s efficiency. In addition to 6 in. sensor-tipped probe with linear insertion markings and adjustable rubber bushing, portable unit includes 4-digit 1.5 in. LCD, protective probe cap, and belt clip.