There are internal and also master controllers for compressors.
6.1 Internal controllers
Internal controllers are not just used for switching the compressors on and off. Today, they are mostly based on powerful industrial PCs that are able to optimise the compressors' efficiency, thanks to programmed control systems.
6.2 Master controllers, tele-monitoring
The principal task of a master controller is the coordination and monitoring of the individual components of a compressed air station.