This digital humidity thermometer and wet-bulb temperature design combine the functions of humidity meter, temperature meter, wet-bulb temperature and dew point temperature. Ideal humidity and thermometer instruments for laboratory, industrial, and professional applications. Small appearance, easy to use, a white backlight LCD screen, can be used in the dark environment. Humidity and thermometer for use with humidity/ semiconductor sensors. High humidity accuracy and temperature accuracy. Fast response time, maximum and minimum value measurement Data hold function, showing temperature and humidity at the same time Automatic shutdown function and disable automatic shutdown function are available Model: HT-86 Dew point temperature: -50-60(-58-140) Wet bulb temperature: -20-60(-4-140) Resolution: 0.1%RH, 0.1/0.1 Humidity accuracy: 3%RH(within 25, 10% - 90% RH), 4.5%RH(90%RH)(other) Temperature accuracy: 0.5/0.9(10-55), 1.5/3(other) Response time RH: 10S(90% 25) Operating environment: 0-40(32-104), Less than 80% RH non-condensing Storage temperature: - 10 - 60(14-140), Less than 80% RH non-condensing. Battery: 9V battery Color: Yellow Material: Metal+Plastic Package Contents: 1 x Digital Humidity & Temperature Meter Only the above package content, other products are not included. Note: Light reflection 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.