Many of Luther’s classrooms are equipped video projectors for showing movies, presentations, and web sites. Projector bulbs cost $350 to $550, so it’s important to make them last as long as possible. This can be done by simply turning off projectors when they are not in use.
Some of the newer projectors have timers, but they aren’t set because they would shut off too often during class. Classroom control systems make it easier to turn projectors on and off and do help alleviate this problem.
The best practice is to turn off the projector when you are done with it.