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  2. Push switch - Wikipedia

    en.wikipedia.org/wiki/Push_switch

    A push switch (button) is a momentary or non-latching switch which causes a temporary change in the state of an electrical circuit only while the switch is physically actuated. An automatic mechanism (i.e. a spring ) returns the switch to its default position immediately afterwards, restoring the initial circuit condition.

  3. Switch - Wikipedia

    en.wikipedia.org/wiki/Switch

    Each key of a computer keyboard, for example, is a normally-open "push-to-make" switch. A "push-to-break" (or normally-closed or NC) switch, on the other hand, breaks contact when the button is pressed and makes contact when it is released. An example of a push-to-break switch is a button used to release a door held closed by an electromagnet.

  4. Punch-down block - Wikipedia

    en.wikipedia.org/wiki/Punch-down_block

    A tool called a punch down tool is used to push the wire down firmly and properly into the slot. Some will automatically cut any excess wire off. [ 1 ] The exact size and shape of the tool blade varies by manufacturer, which can cause problems for those working on existing installations, especially when there is a poorly documented mix of ...

  5. Light switch - Wikipedia

    en.wikipedia.org/wiki/Light_switch

    Shown here will be fastened to this recessed, non-metallic box, then a cover plate is installed. This "double gang" (two unit) installation uses non-metallic-sheathed cable and twist-on wire connectors. In electrical wiring, a light switch is a switch most commonly used to operate electric lights, permanently connected equipment, or electrical ...

  6. Automatic box-opening technology - Wikipedia

    en.wikipedia.org/wiki/Automatic_box-opening...

    Automatic box-opening technology is designed to automatically open boxes on a conveyor or other "pass through" environment. The process was invented due to a gap in automation technology that exists in large distribution centers and warehouses .

  7. Utility box - Wikipedia

    en.wikipedia.org/wiki/Utility_box

    Utility box may refer to: A toolbox; Pattress, a box that houses electrical sockets, switches, or other fixtures, also known as an electrical box Junction box, a box that houses electrical connections; Electrical enclosure, a cabinet-sized box housing electrical equipment or connectors Pad-mounted transformer

  8. Crash bar - Wikipedia

    en.wikipedia.org/wiki/Crash_bar

    A crash bar (also known as a panic exit device, panic bar, or bump bar) [1] [2] is a type of door opening mechanism which allows users to open a door by pushing a bar. While originally conceived as a way to prevent crowd crushing in an emergency, crash bars are now used as the primary door opening mechanism in many commercial buildings.

  9. Screwfix - Wikipedia

    en.wikipedia.org/wiki/Screwfix

    Screwfix Direct Limited, trading as Screwfix, is a retailer of trade tools, accessories and hardware products based in the United Kingdom. [6] Founded in 1979 as the Woodscrew Supply Company, the company was acquired in July 1999 by Kingfisher plc , which also owns B&Q , and is listed on the London Stock Exchange .