Extech RH490 Handheld Thermohygrometer, ±2 %RH Accuracy, +199°F Max, 100%RH Max

The FLIR Precision Hygro-Thermometer is a high-accuracy device designed for HVAC professionals and water damage restoration contractors. With less than 30-second RH response time, it provides precise measurements of humidity, temperature, dew point, wet bulb, and water vapor levels.

Provides highest 2% RH accuracy with Grains Per Pound (GPP) and Grams per Kilogram (g/kg) measurement
Dual backlit display for easy reading in any lighting conditions
Slim design with rubberized sides for better grip and one-hand operation
Auto power off with disable and low battery indicator for prolonged battery life