Digital humidity&temperature?meter HETHT01

Ambient temperature:-20?~60?(-4?~140?)
Ambient humidity:0~100%
Web bulb temperature:-20?~60?(-4?~140?)
Dew point temperature:-20?~60?(-4?~140?)
With backlight function
With lower battery indication function
With 3pcs LR03 AAA batteries
Packed by color box