Service:Humidity, temperature, wet bulb and dew point temperature detection in clean air.Temperature Limits:Process: -40 to 176°F (-40 to 80°C); Ambient: 5 to 125°F (-15 to 51°C).Range Relative Humidity:0 to 100% (non-condensing).Accuracy Relative Humidity:±2% FS over 10 to 90% @ 77°F (25°C).Range Temperature:-20 to 140°F (-28 to 60°C).Accuracy Temperature:±0.54°F @ 72°F (±0.3°C @ 25°C).Display:4.5 digit LCD.Resolution:0.1%, 0.1 °F/°C.Probe Length:8″ (203 mm) insertion.Power Requirements:9 V alkaline battery, included, user replaceable.Weight:16 oz (454 g).Agency Approvals:CE.