Features:
* indoor& outdoor temperature display, indoor humidity display
* temperature unit ℃/℉ changeable
* memory of MAX/MIN value of temperature & humidity
*comfortleveldisplay
Temperature Range: 
Indoor: -10℃～+50℃ (+14℉～+122℉)
Outdoor: -50℃～+70℃ (-58℉～+158℉)
Humidity Range: indoor 20%RH～90%RH
Product Dimension:98×75×18mm
Power-supply: 1.5V (AAA) x1