Digital Humidity Temperature Meter Hygrometer LCD Display Air Dew Point Wet Bulb Temperature Tester Item Type: Dew Point Wet Bulb Tester Material: ABS, LCD Color: Black red Ambient Temperature: Range: -40 to 80°C (-40 to 176°F ) Accuracy: ± 0.5°C, +1°F Resolution: < 100°C 0.01 °C/0.01 °F ≥ 100°F 1 °F Relative Humidity: Range: 10~90%RH Accuracy: ±3.0%RH Resolution: < 100°%RH 0.01°%RH ≥ 100°%RH 0.01°%RH Wet Bulb Temperature: Range: -40 to 80°C (-40 to 176°F) Accuracy: ±0.4°C, +1°F Resolution: <100°F 0.01°C/ 0.01°F, ≥100°F 1°F Dew Point Temperature: Range: -40 to 80°C (-40 to 176°F ) Accuracy: ±0.4°C, +1°F Resolution: <100°F 0.01°C/ 0.01°F, ≥100°F 1°F Sensor: Switzerland (SHTC3) Sampling Rate: 10 times/sec Update Rate: 3 times/sec Record Length: 99 hours from REC open record maximum display Data Storage: 8000 strokes Automatic Shutdown: 15 minutes (can be manually shut down) Operating Environment: -10~ 50°C, maximum 80% relative humidity, indoor altitude <2000m Storage Environment: -10~ 50°C, maximum. 70% relative humidity ( remove the battery ) Display Size: Approx. 53 x 44mm / 2.1 x 1.7in Battery: 3 x 1.5V AA battery(not included)