Check the listing for details. Hygrometer Psychrometer Temperature RH WB DB DP TEET. Condition: New. Listed at 123.27 USD. It measures Temperature, RH, WB, DB, DP, TEET, and TSH Model # DT-3322 It helps the HVAC professionals easily diagnose problems with air flow across the evaporator. It can also calculate the target superheat of a fixed restrictor air conditioning system. Features Selectable NTC or Type K measure mode Dew Point Temperature measure Wet Bulb Temperature measure Dry Bulb Temperature measure Calculate the Target Superheat Calculate the Target Evaporator Exit Temperature Response time < 15s °C/°F selectable MAX, MIN, HOLD modes Dual display with backlight Automatic Power Off Low battery display Specifications Function Range Resolution Best Accuracy Humidity 0-100%RH 0.1%RH ± 2.5%RH Temperature -30-100°C /-30-199°F 0.1°C /°F ± (0.5rdg + 1°C) Type K Temp. -50-1372°C /-58-2501°F 0.1°C /°F (1000) ±0.15%±1°C /1.8°F NTC. Temp. 0-60°C /32-140°F 0.1°C /°F ±1°C /2°F Dew Point Temp. -30-100°C /-22-199°F 0.1°C /°F ±1.0°C /1.8°F Wet Bulb Temp. 0-80°C /32-176°F 0.1°C /°F ±1.0°C /1.8°F Dimensions: 220x 63x 28 mm; 8.8x 2.5x 1.1 in Operating condition: 0-50°C/ 32-122°F,