ERAY Temperature and Humidity Gauge Meter with Backlight Digital Psychrometer Thermometer Hygrometer, Dew Point and Wet Bulb Temperature, Battery Included

About this item 2-IN-1: This digital psychrometer is designed to combine the functions of humidity meter, temperature meter, wet bulb temperature and dew point temperature. The dew point is a measure of how much water vapor actually in the air BACKLIGHT LCD DISPLY: Unlike the others without backlight on the market, ERAY temperature and humidity gauge is equipped with a bulb light in the LCD screen, user can easy to read the measurements in the darkness DUAL DISPLAY: Temperature range: -30 ퟏ???0 ퟎ???-22 ퟛ???40 ퟚ??? Humidity range: 0~100%RH; Dew point temperature range: -50 ퟏ???0 ퟎ???-58 ퟛ???40 ퟚ??? Wet bulb temperature range: -50 ퟏ???0 ퟎ???-58 ퟛ???40 ퟚ???/span> EASY TO USE: Unit switcher: ퟎ???nd ퟛ???Temperatue mode switcher: normal, dewpoint and wet bulb), Max Hold and Min Hold Function; Auto shutdown without operation after 12 minutes; 6F22 9V Battery included WIDELY USED: Used for HVAC, industry, agriculture, meteorology, medical, daily life, building engineer, paranormal investigator, in wine cellar, machine room, data storeroom and etc. 12 months free replacement for the product quality problem