Traceable™ Dew-Point/Wet-Bulb/Humidity ThermometerTraceable Dew Point Wet Bulb Humidity Thermometer Relative humidity range is 1 to 99% Resolution is 0. 1% RH Accuracy is 4% RH between 35 to 75%RH, 5%RH otherwise Humidity features include dew point wet bulb functions, minimum maximum memory and high low alarms Temperature range is 40 to 158F and 40 to 70C Temperature accuracy: 1. 8F (1. 0C) Resolution is 0. 1 Battery type: Two AA batteries Display type: 1" LCD display Wall mounting Unit measures 4 1