Here you can see piping and manual valves as well as electronic sensors and actuators all in the same diagram. Next time you need to document the wiring of something, QElectroTech is a good option ...

The copper wiring, which can be up to 15 feet away from the sensors, picks up the signal and acts as a giant receiving antenna, transmitting the data at 27 megahertz to a base station plugged into ...