- A system that needs to be maintained
- And another system that monitors the first which has sensors and control output
Applications: in electric utilities SCADA is used to monitor current flow and voltage management, manage circuit breakers and to take actions to the power grid. In water and Sewage it monitors and regulates water flows, reservoirs levels, piper pressure etc.
SCADA gives autonomy which is a key factor in efficiency. If the system is efficient, in turn, it will be less costly.