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  2. Key switch - Wikipedia

    en.wikipedia.org/wiki/Key_switch

    A key switch (sometimes called a keyswitch or lock switch) is a key-operated switch. [1] Key switches are used in situations where access to the switch's functions needs to be restricted. [2] [3] Key switches are available as components with solder connections, and are available with a variety of ampere ratings. They may use tubular or other ...

  3. Trapped-key interlocking - Wikipedia

    en.wikipedia.org/wiki/Trapped-key_interlocking

    Whenever the kiln power switch is turned on, the key is automatically held by the interlock, and cannot be manually removed. In order to open the kiln door, the power switch must first be turned off, which releases the key and allows it to be removed from the interlock. The key can then be used to unlock the kiln door.

  4. Heating, ventilation, and air conditioning - Wikipedia

    en.wikipedia.org/wiki/Heating,_ventilation,_and...

    Such a system contains a boiler, furnace, or heat pump to heat water, steam, or air in a central location such as a furnace room in a home, or a mechanical room in a large building. The heat can be transferred by convection, conduction, or radiation. Space heaters are used to heat single rooms and only consist of a single unit.

  5. Keyswitch - Wikipedia

    en.wikipedia.org/wiki/Keyswitch

    A keyswitch is a type of small switch used for keys on keyboards. Key switch is also used to describe a switch operated by a key, usually used in burglar alarm circuits. A car ignition is also a switch of this type.

  6. Wright R-790 Whirlwind - Wikipedia

    en.wikipedia.org/wiki/Wright_R-790_Whirlwind

    Over the next two years, Wright gradually refined the J-1 engine, introducing the J-3, J-4, J-4A, and J-4B. The changes improved the engine's reliability, cooling, and fuel consumption, but the basic design, dimensions, and performance were unaltered. [1] The J-4 was the first engine to bear the Whirlwind name; previous engines used only the ...

  7. AOL Mail - AOL Help

    help.aol.com/products/aol-webmail

    Get answers to your AOL Mail, login, Desktop Gold, AOL app, password and subscription questions. Find the support options to contact customer care by email, chat, or phone number.

  8. QVC recalls 1.1 million pairs of oven gloves after users ...

    www.aol.com/qvc-recalls-1-1-million-184754508.html

    The gloves sold for between about $4 and $13 a pair and in bundled sets with other kitchen items for between $14 and $26 a set. People who purchased the oven gloves should stop using them and ...

  9. Elon Musk and Vivek Ramaswamy to meet with House ... - AOL

    www.aol.com/elon-musk-vivek-ramaswamy-meet...

    Elon Musk and Vivek Ramaswamy will head to Capitol Hill next week to meet with House Republicans on their plan to slash regulations and other parts of the federal government. Speaker Mike Johnson ...

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