Assertion: relay | /r/HasProperty | electromagnetic switch
Facets:
Source sentences:
text: A relay is an electromagnetic switch operated by a relatively small electric current that can turn on or off a much larger electric current.
text: A relay is an electromagnetic switch that is used to turn on and turn off a circuit by a low power signal, or where several circuits must be controlled by one signal.
text: A relay is an electromagnetic switch which is used to switch High Voltage/Current using Low power circuits.