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  2. Radio teleswitch - Wikipedia

    en.wikipedia.org/wiki/Radio_teleswitch

    Economy 7 meter and radio teleswitch, right. A radio teleswitch is a device used in the United Kingdom primarily to allow electricity suppliers to switch large numbers of electricity meters between different tariff rates, by broadcasting an embedded signal in broadcast radio signals.

  3. List of keyboard switches - Wikipedia

    en.wikipedia.org/wiki/List_of_keyboard_switches

    Switch name Stem design Switch type Click type Initial force Actuation force Spring force Actuation point Total travel Mounting type Factory lube SMD LED compatibility Key stroke lifespan Drop x Invyr Kailh Holy Panda [22] MX Type stem Tactile N/A 67 g 67 g 67 g 1.2 mm 4.0 mm Plate mounting No Yes 80 million Drop Kailh Halo True [23] MX Type stem

  4. 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.

  5. List of telephone switches - Wikipedia

    en.wikipedia.org/wiki/List_of_telephone_switches

    SP1E (used NT40 processor which was later the first processor system for the DMS-100 Family of switches) NE-1ESS (Northern Electric version of Western Electric) #1ESS {licensee} [citation needed] Bell Canada operated NE-1ESS 2 wire switches (some of which also provided Centrex services) in Toronto, Ottawa and Montreal.

  6. Switch - Wikipedia

    en.wikipedia.org/wiki/Switch

    A high-voltage disconnect switch used in an electrical substation. Such switches are used mostly to isolate circuits, and usually cannot break load current. High-voltage switches are available for the highest transmission voltages, up to 1 million volts. This switch is gang-operated so that all three phases are interrupted at the same time.

  7. Electric switchboard - Wikipedia

    en.wikipedia.org/wiki/Electric_switchboard

    An electric switchboard is a piece of equipment that distributes electric power from one or more sources of supply to several smaller load circuits. It is an assembly of one or more panels, each of which contains switching devices for the protection and control of circuits fed from the switchboard.

  8. Knob-and-tube wiring - Wikipedia

    en.wikipedia.org/wiki/Knob-and-tube_wiring

    The conduit methods were known to be of better quality, but cost significantly more than K&T. [2] In 1909, flexible armored cable cost about twice as much as K&T, and conduit cost about three times the price of K&T. [6] Knob and tube wiring persisted since it allowed owners to wire a building for electricity at lower cost.

  9. Leviton - Wikipedia

    en.wikipedia.org/wiki/Leviton

    The original Leviton logo, used from 1924 to circa 1968 Leviton level 2 EV charging station Leviton Headquarters. Leviton was founded in 1906 by Russian immigrants Evser Leviton and his son Isidor Leviton when they began manufacturing brass mantle tips for natural gas lights in Manhattan's Lower East Side.