These switches -- WattStopper, etc. -- inregards to 210.70 (A) exception 2 are for habitable spaces.
In all my days, I've never installed one in an electrical or service room.
The energy conservation rules kick intelligence in at 100 square feet whenever it would not create a hazard.
If you're in the room, the automatic feature triggers it on...with a delay after your departure.
You can kill it anyway so as to permit viewing movies, TV, or sleeping.
The device logic always requires power ahead of its own switching. So the automatic switch is in series with the manual override built into the device.
