#electrical_relay__relay  electrical device such that current flowing through it in one circuit can switch on and off a current in a second circuit
  supertype:  #electrical_device  a device that produces or is powered by electricity
  subtype:  comms#frame_relay (comms)
  part:  #electromagnet
  part of:  #electrical_circuit__circuit__electric_circuit  an electrical device that provides a path for electrical current to flow
     part of:  #electronic_equipment  equipment that involves the controlled conduction of electrons (especially in a gas or vacuum or semiconductor)

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