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  2. Remote racking system - Wikipedia

    en.wikipedia.org/wiki/Remote_racking_system

    A remote switch operator is used to remotely operate various types and styles of circuit breakers and controls. When the remote racking system is used in conjunction with a remote switch operator, the user can also operate, trip, and release the circuit breaker from a safe distance.

  3. Tone remote - Wikipedia

    en.wikipedia.org/wiki/Tone_remote

    A Motorola T-1300 series remote control is built in a telephone housing. The telephone dial is replaced with a metal plate on which is mounted a speaker, volume control and option switches. This remote control uses a two-wire circuit to control a base station. A General Electric MASTR II remote control and desk microphone.

  4. Switch - Wikipedia

    en.wikipedia.org/wiki/Switch

    In industry, rotary switches are used for control of measuring instruments, switchgear, or in control circuits. For example, a radio controlled overhead crane may have a large multi-circuit rotary switch to transfer hard-wired control signals from the local manual controls in the cab to the outputs of the remote control receiver.

  5. Multiway switching - Wikipedia

    en.wikipedia.org/wiki/Multiway_switching

    These switches appear externally similar to single pole, single throw (SPST) switches, but have extra connections which allow a circuit to be controlled from multiple locations. Toggling the switch disconnects one "traveler" terminal and connects the other. Electrically, a typical "3-way" switch is a single pole, double throw (SPDT) switch. By ...

  6. Wireless light switch - Wikipedia

    en.wikipedia.org/wiki/Wireless_light_switch

    Dimmer light switch with RF-based remote control [1] A wireless light switch is a light switch that commands a light or home appliance to turn itself off or on, instead of interrupting the power line going to the light fixture. There are different ways to communicate between the switch and the fixture: [2]

  7. Relay - Wikipedia

    en.wikipedia.org/wiki/Relay

    A relay allows circuits to be switched by electrical equipment: for example, a timer circuit with a relay could switch power at a preset time. For many years relays were the standard method of controlling industrial electronic systems. A number of relays could be used together to carry out complex functions (relay logic). The principle of relay ...

  8. Circuit breaker - Wikipedia

    en.wikipedia.org/wiki/Circuit_breaker

    These circuit breakers are often installed in draw-out enclosures that allow removal and interchange without dismantling the switchgear. Large low-voltage molded-case and power circuit breakers may have electric motor operators so they can open and close under remote control.

  9. Remote terminal unit - Wikipedia

    en.wikipedia.org/wiki/Remote_Terminal_Unit

    A remote terminal unit (RTU) is a microprocessor-controlled electronic device that interfaces objects in the physical world to a distributed control system or SCADA (supervisory control and data acquisition) system by transmitting telemetry data to a master system, and by using messages from the master supervisory system to control connected objects. [1]

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