The Tramex Hygro-i2 RH probe is considered the most advanced reusable RH prove on the market, allowing you to perform in situ RH testing to comply with BS 8201, 8203, 5323 and ASTM F2170 for the flooring industry. Speed and accuracy sets these probes apart from other probes on the market giving you the confidence and peace of mind that you are testing with the best equipment available. Available in packs of 1 or 3 Fast acclimation time High accuracy even at RH > 90% Temperature range: -40C to 125C