Extech RH490 Precision Hygro-Thermometer - Dew Point & GPP

The Extech RH490 Precision Hygro-Thermometer is a reliable handheld tool designed for professionals who need fast and accurate humidity measurements. This versatile instrument provides quick results, delivering relative humidity readings in less than 30 seconds. It is built to handle complex calculations, capturing essential data such as dew point, wet bulb, temperature, and water vapour levels in both Grams per Kilogram (g/kg) and Grains per Pound (GPP). Designed for ease of use in various environments, the RH490 features a slim design with rubberized side grips for a secure hold. The dual backlit display allows for clear reading in different lighting conditions, offering simultaneous views of Humidity/Temperature, Humidity/Dew Point, or Humidity/Wet Bulb. To help you track changes over time, the device stores maximum and minimum readings until you clear the memory. A dedicated data-hold button is included to capture measurements during rapid fluctuations. This complete kit comes ready to work with a 9V battery and a protective carrying case.