The Climomaster Velocity, Temp & RH Probe 6533-2G from Kanomax measures air velocity, air temperature and relative humidity when used in conjunction with the Climomaster Hot Wire Anemometer. The 6533-2G is omni-directional so accurate measurements can be obtained no matter how the probe is oriented in the duct. This probe gives air velocity measurements from 10 to 1000 fpm, air temperature measurements from -4 to 158 °F and relative humidity measurements from 2.0 to 98.0% RH.