KnowraRelayLinked fromLinked fromThe 14 pages that link to Relay, each with the reason it gives.All 14Broader topic 4Related 9Compared with 1ThermostatBroader topic: Many thermostats use a relay to switch power to heating or cooling equipment.ElectromagnetBroader topic: A relay uses coil current to control a separate electrical circuit.Joseph HenryBroader topic: Henry devised an early practical relay, showing how electromagnets could transmit control over distance.Konrad ZuseBroader topic: Electromechanical relays formed the switching elements of the Z3 and several earlier Zuse machines.