The WS-1050 is a basic compact weather station
It measures both the indoor and outdoor temperature
If the batteries of the weather station or the outdoor unit are almost empty you get a message
Both the outdoor sensor and indoor unit run on 3 AAA batteries
The WS-1050 is both portable and suitable for wall mounting 

With its compact size, the WS-1050 is portable: you can take it with you to any room in your house. 
If you prefer to mount the WS-1050 to the wall: you can. 
This basic weather station is suitable for wall mounting.