This Article is about the TV you may be looking for the Large TV

  The TV is an object that prisoners use to lower their comfort and recreational needs. The Large TV was removed in Alpha 9.(It appears again in v2 Beta)

 It also increases the quality of a cell it is placed in by 1. 

If the player has events activated when playing a prison, the CEO may call and tell you that you must remove all TVs from the common room

In beta v2, a 3x3 square before the TV also lowers the recreation need for prisoners. They can do other things, while being there.