What is this piece of equipment?

I'm a big fan of the Big Bang Theory (the TV show that is) and am intrigued by the piece of equipment they have sat on the wall of their apartment. 

I've circled it in white on the image below. 

At first I thought it was just one of those fancy heating radiators you can find nowadays but I don't think it is?

I'm intrigued, what is it? 

cast of the big bang theory tv show