Check the listing for details. UEi DTH35 Digital HVAC Psychrometer Thermo-Hygrometer, Portable Relative.... Condition: New. Listed at 148.99 USD. UEi DTH35 Digital HVAC Psychrometer Thermo-Hygrometer, Portable Relative Humidity Meter, Handheld Electronic in-Duct Thermometer, Measures Wet Bulb Dry Bulb Dew Point Temperature Humidity Product Details Brand: UEi Test Instruments Product Dimensions: 1.7"W x 9.37"H Item Weight: 0.2 Ounces Battery Description: Alkaline Mounting Type: Tabletop Operating Humidity: 10-90% Upper Temperature Rating: 122 Degrees Fahrenheit Temperature Accuracy: +1 degree Celsius Manufacturer: UEi Test Instruments Part Number: DTH35 Item Weight: 0.2 ounces Item model number: DTH35 Batteries: 2 Lithium Metal batteries required. (included) Is Discontinued By Manufacturer: No Style: Digital Psychrometer (DTH35) Material: other Power Source: Battery Powered Item Package Quantity: 1 Included Components: Batteries, DTH35 Batteries Included?: Yes Batteries Required?: Yes Battery Cell Type: Alkaline Description Pile: Alkaline Brand: UEi Test Instruments Product Dimensions: 1.7"W x 9.37"H Item Weight: 0.2 Ounces Battery Description: Alkaline Mounting Type: Tabletop 5 MEASUREMENTS: The DTH35 measures Wet bulb, Dew Point, Enthalpy, Temperature, Relative Humidity. There are Data Hold and Min/Max functions to monitor fluctuations in readings. BACKLIGHT: Our Psychrometer comes with a backlit dual display to help readability in dark environments. The dual display allows you to read temperature and humidity at the same time. ✋ HANDS FREE: The DTH35 has a magnetic mount allowing handsfree usage. There is a screw on plastic cover to protect the sensor when not in use. The cover doubles as an extension handle to reach further. ️ BROAD APPLICATION: Our psychrometer was designed specifically for HVAC Ductwork, but also works effectively in Greenhouses, Laboratories, Freezers, Kitchens, Offices, Computer labs, and many other environments. The DTH35 Digital Psychrometer measures temperature, relative humidity, and calculates wet bulb, dew point, and enthalpy of moist air (air with humidity). The housing design is useful for in-duct measurement, as well as ambient or vent outlet applications. A large, easy to read display, and built in magnet improves ease of use. Specifications • Temperature Range: -4 to 122°F (-20 to 50°C) • RH% Range: 0 to 99.9% RH% • Wet Bulb: 5 to 121.8°F (-15 to 49.9°C) • Dew Point: -4 to 121.8°F (-20 to 49.9°C) • Enthalpy 0 to 125 BTU/Lb (0 to 292 KJ/KG).UEi Test Instruments has over 50 years’ experience designing and manufacturing a broad range of award-winning, industry-leading Test and Measurement Tools. Professionals recognize the UEi brand for quality and innovative features designed to solve real-world problems. UEi backs its products with dedicated technical support, service and repair teams.