The HHF-308 anemometer with wind chill function and the HHF-309 anemometer psychrometer with CFM/CMM and enthalpy, from OMEGA, are economical and ideal for monitoring the outdoor environment. These devices feature a compact, easy-to-use design with a large dual backlit LCD, and high accuracy. Applications include outdoor environmental studies: a safety must for winter campers, mountaineers and anyone that works or plays in cold windy environments. The HHF-309 is also ideal for HVAC technicians seeking to test and fine-tune the performance of an HVAC/R system. CE certified and 1-year warranty included on both models.