Technical trade links offers temperature/humidity meter. The fluke 971 temperature/humidity meter is a rugged, pocket-size test tool designed for professionals in heating, ventilation and air-conditioning [hvac], building maintenance and indoor air-quality fields The meter measures temperature, dew point or wet bulb from -20c to 60c [-4f to midity from 5 to 95 per cent with an accuracy of 2.5 per cent rh. Its 99-point data storage capacity means users can take multiple readings and store them for later analysis. The unit operates off four aaa alkaline batteries.