Ridgid 37438 HM-100 Micro Humidity & Temperature MeterThe Ridgid HM-100 Micro Humidity and Temperature Meter is a professional and easy-to-use device for accurately measuring air humidity and temperature. It is perfectly suitable for any HVAC environment due to its durable Capacitance Sensor.Features Instantly and simultaneously displays humidity, temperature, Dew Point, and Wet-Bulb temperatures. Dual backlit LCD for clear readings. Capacitance Sensor withstands condensation and high temperatures.Specifications Brand: Ridgid MPN: 37438 EAN: 0095691374387 Humidity Range: 0% to 100% RH Humidity Accuracy: ± 2% RH Temperature Range: -30°C – 100°C Temperature Accuracy: ± 0.5°C Response Time: 30 Seconds Sensor Type: Capacitance Data Hold: Yes MAX/MIN Values: Yes Auto Power-Off: Yes, After 15 Minutes (can be disabled) Power Source: 9V Battery (included)