The Triplett RHT60 Precision Psychrometer provides simultaneous display of humidity/temperature, humidity/dew point, humidity/wet Bulb with fast response time (<30 seconds) and high accuracy ±2%RH (10 to 90%). The RHT60 easy one hand operation with rubberized sides and slim design. The RHT60 features data hold, min/max functions, auto power off with disable, and low battery indicator,°F/°C switchable. The RHT60 ideal for building inspection, water restoration, greenhouses, warehouses, museums, libraries, offices, storage areas, and more.