HygroMaster 2 HygroStick Humidity Sensor (BLD4750) Hard Case 2 Year Warranty Recommended for high %RH harsh environment applications such as ERH measurement in concrete operates between 30 & 98% RH.

HygroMaster 2 Short QuikStick Humidity Sensor (POL8751) Hard Case 2 Year Warranty Recommended for general measurement & applications such as flood damage restoration. Operates between 0-100% RH.