This temperature and humidity meter can be widely used for laboratory, industrial, engineering testing and other applications; and used exclusively to measure humidity, air temperature, wet bulb temperature and dew point temperature. Features: 100% brand new and high quality Measure temperature and humidity, wet lamp and dew point temperature. Digital humidity and temperature meter used for a wide range of applications, such as industry, agriculture, meteorology, daily life, construction engineer, cellar, engine room and data storage. Max / min / data retention functions, high accuracy and quick response. Backlit LCD display for easy operation in the dark. Low battery indication, automatic shutdown, energy saving. Specification: Material: Plastic Color: Black+Green Relative humidity: Range: 0-99%RH Resolution: 0.1% Accuracy: 3.0%RH(20%-80%), 4.0%RH(80%-99%) Room temperature: Range: -20-60/-4-140 Resolution: 0.1/0.2 Accuracy: 1(0-45), 1.5(-20-0, 45-60) 2(32-113), 3(-4-32, 113-140) Dew point temperature: Range: -50-60/-58-140 Resolution: 0.1/0.2 Accuracy: 1(0-45), 1.5(-50-0, 50-60) 2(32-113), 3(-58-32, 122-140) Wet bulb temperature: Range: -20-60/-4-140 Resolution: 0.1/0.2 Accuracy: 1(0-45), 1.5(-20-0, 45-60) 2(32-113), 3(-4-32, 113-140) Data update: 400ms Power supply: 1 x 9V 6F22 battery(Not included) Auto power-off: 10 minutes no operation Size: app. 192x53.8x35mm(7.56x2.12x1.37in) Quantity: 1 pc Note: Transition: 1cm=10mm=0.39inch With retail package. Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package includes: 1 x Digital Thermo-hygrometer(other accessories demo in the picture is not included.)