Range 
Temperature:Indoor:-10℃～+50℃ (+14℉ ～ +122℉)
Outdoor:-50℃～+70℃ (-58℉ ～ +158℉)
Indoor Humidity： 20%RH～90%RH
Battery life： one year
Size of product: 145*80*24mm
Material: ABS
Packaging style: Blister
Packaging material: PVC

Packing details 
Qty. in carton: 50PCS
N.W.: 8.0KG
G.W.: 8.6KG
size of carton: 44*31.5*24CM

Features:

* indoor & outdoor temperature display, indoor humidity display

* temperature unit ℃/℉ changeable

* memory of MAX/MIN value of temperature ,and  humidity

*date & time display

*week display(in English,German,French,Italian,Spanish)

* 2 modes of time display: 12h / 24h

* everyday alarm function

* Power-supply: 1.5V (AAA ) ×2