The all new Trammel Hygro-i Relative Humidity probe is the most advanced and resilient RH probe on the market today. Used in conjunction with the Trammel CMEX2 or MRH3 non-destructive moisture meters the Hygro-i probe provides measurements of humidity, temperature and dew-point in structural materials such as concrete flooring, walls etc. as well as the environmental conditions within the building structure allowing the user to perform in-situ & hood type RH testing to comply with ASTM F2170 & F2420.