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： 150*88*24mm
Material： ABS
Packaging style： Blister
Packaging material： PVC

Packing details 
Qty. in carton: 50PCS
N.W.： 10 KG
G.W.： 11.1KG
size of carton： 57.5*35.8*29.2CM

Features:
* indoor & outdoor temperature and indoor humidity display （ automatic exchanging in 5 seconds between indoor & outdoor temperature）

* temperature unit ℃/℉ changeable

* memory of MAX/MIN value of temperature & humidity

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

* pointing function on each hour

* everyday alarm function

* calendar display function
 week display function

* clock & date display function, automatic exchanging in 5 seconds between clock & date

* Power-supply: 1.5V (AAA size) ×1