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  2. Time switch - Wikipedia

    en.wikipedia.org/wiki/Time_switch

    A time switch (also called a timer switch, or simply timer) is a device that operates an electric switch controlled by a timer. Intermatic introduced its first time switch in 1945, which was used for "electric signs, store window lighting, apartment hall lights, stokers, and oil and gas burners." A consumer version was added in 1952.

  3. NEMA connector - Wikipedia

    en.wikipedia.org/wiki/NEMA_connector

    A blue receptacle may indicate built-in surge suppressors. [citation needed] A red receptacle may indicate a special-service outlet such as one connected to an emergency standby power source. The Canadian Electrical Code requires that "essential" receptacles in hospitals, connected to emergency power systems, must be red. [43]

  4. Multiway switching - Wikipedia

    en.wikipedia.org/wiki/Multiway_switching

    The electrical load may be permanently hard-wired, or plugged into a switched receptacle. Three-way and four-way switches make it possible to control a light from multiple locations, such as the top and bottom of a stairway, either end of a long hallway, or multiple doorways into a large room.

  5. 50 Times Cheap Fixes Had A Major Impact On Home Life - AOL

    www.aol.com/55-people-share-relatively-cheap...

    "Electrical work, major plumbing renovations, and large-scale structural changes are best left to experts with the requisite skills and experience." ... And new timer switch :) New patio furniture ...

  6. Standby power - Wikipedia

    en.wikipedia.org/wiki/Standby_power

    Electronic and electrical devices that can carry out some functions even when switched off, e.g. with an electrically powered timer. Most modern computers consume standby power, allowing them to be woken remotely (by Wake on LAN, etc.) or at a specified time. These functions are always enabled even if not needed; power can be saved by ...

  7. Light switch - Wikipedia

    en.wikipedia.org/wiki/Light_switch

    In electrical wiring, a light switch is a switch most commonly used to operate electric lights, permanently connected equipment, or electrical outlets. Portable lamps such as table lamps may have a light switch mounted on the socket, base, or in-line with the cord.

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