HIGH PRECISION DETECTION: Professional and accuracy thermometer and hygrometer,Fast Response Time , High Accuracy and Performance ; ABS Plastic, Dust and Splash Proof, and Useful,Large LCD display with backlight, easy and clear for reading. DUAL DISPLAY HUMIDITY: Temperature with Accurate Measuring, the temperature range is -40~+105 Celsius, humidity range is 0 to 100%RH; Measure the temperature and humidity in environment. Three types temperature mode: ambient temperature , dew-point temperature and wet bulb temperature. MULTIFUNCTION: The new type of digital temperature and humidity moisture meter is designed to combine the functions of humidity meter, temperature meter, wet bulb temperature and dew point temperature. And Dew point is a measure of how much water vapor actually in the air. Perfect for HVAC,indoor air quality and environmental applications. HOLD THE CURRENT MEASUREMENT DATA: One button freely switch between humidity and temperature. LCD display with backlight with sensor, LCD brighter in the darker places, with an auto power off function. WIDE APPLICATION: Digital humidity and temperature meter used for a high range of applications-HVAC,industry,agriculture,meteorology,,building ,paranormal investigator,in wine cellar ,machine room, in living and office area, traffic environment and data storeroom. Colour: black Material: ABS Size: about 21x55x32mm Package Contents: 1 * Hygrometer (without battery) Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.