1.accurate humidity 2.dual display, 3.backlight and auto power off and operateson three AAA battrries only.

SPECIFICATIONS:

.Measure Parameters: °C, °F, %RH(relative humidity), td(dew point temperature).Range: -10 ~ +50°C, +14 ~ +122°F, 0 ~ +100%RH.Resolution:0.1°C, 0.1°F ; 0.1%RH .Accuracy: ±1.0°C, ±1.8°F, ±3%RH(5~95%RH).Sample Rate:1 time sec.Display: 4 digits LCD Display.Auto power off : About 20min.Dimension:121 x 60 x 30mm .Weight:180g.Power Supply: DC1.5V (AAA) x 3pcs

Accessories include:

. Free 1.5V x3AAA batteries .Free protect cover .Free protective carrying case .Free Wrist Strap/String .User's Manual

temperature humdity meter