Feature: 1. HIGH ACCURACY: Adopt Switzerland SHTC3 high accuracy temperature and humidity sensor, sampling rate up to 10 times/second, display update speed 3 times/second. 2. ALARM FUNCTION: Temperature and humidity can set the upper and lower alarm thresholds respectively. When the measurement is higher or lower than the set threshold value, there will be a buzzer alarm alert sound, as well as a flashing alarm alert light. 3. LCD DISPLAY: Show you ambient temperature, ambient humidity, dew point temperature, wet bulb temperature. Two rows of data can be displayed simultaneously. 4. PORTABLE DESIGN: Small and exquisite shape is easy to use, lightweight, easy to carry, quick response sensor, very sensitive and practical. 5. ABS LCD: Made of excellent material, it is durable, wear resistant and corrosion resistant, and can adapt to various harsh environments. Specification: 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). Package List: 1 x Temperature Humidity Meter1 x Cloth Bag1 x Instruction Manual