|Version Introduced||Alpha 1|
- Displays all kinds of jazzy stuff for the entertainment of citizens. - In-game description
Monitors raise the entertainment and therefore the overall happiness of citizens in the room they are in.
Many people have complained about low morale, usually, unless under very specific circumstances, monitors alleviate this problem quite a bit.
Try to build them in popular rooms such as the Pub, and don't be afraid to build a lot of them. The more the better.