central-vacuum installations include electrical connections associated with powered vacuum equipment or accessories. Central-vacuum systems can be configured with different types of hoses and inlets, including electrically connected systems.
So don’t assume the little socket is simply there for plugging in a phone charger.
How Does the System Work?
The basic idea is surprisingly simple.
You attach the vacuum hose to the wall inlet.
The inlet connects to tubing hidden inside the walls.
That tubing leads back to a central vacuum power unit, usually installed somewhere such as a garage, basement,