Range 
Temperature:Indoor:-10℃～+50℃ (+14℉ ～ +122℉)
Outdoor:-50℃～+90℃ (-58℉ ～ +194℉)
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.： 7.7KG
G.W.： 8.3KG
size of carton： 44*31.5*24CM

Features:

* indoor & outdoor temperature display, indoor humidity display

*time diaplay

* temperature unit ℃/℉ changeable

* memory of MAX/MIN value of temperature,and display  the recorded time simultaneously

*highest/lowest outdoor temperature alarm function

*date & time display

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

* everyday alarm function

*comfort  level display

* Power-supply: 1.5V (AAA )×1