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  2. Garage door opener - Wikipedia

    en.wikipedia.org/wiki/Garage_door_opener

    A quick-release mechanism is attached to the trolley to allow the garage door to be disconnected from the opener for manual operation during a power failure or in case of emergency. Limit switches on the power unit control the distance the garage door opens and closes once the motor receives a signal from the remote control or wall push button ...

  3. Garage door - Wikipedia

    en.wikipedia.org/wiki/Garage_door

    Sectional garage door Up-and-over garage door Garage Door Hardware. A garage door is a large door to allow egress for a garage that opens either manually or by an electric motor (a garage door opener). Garage doors are frequently large enough to accommodate automobiles and other vehicles. The operating mechanism is usually spring-loaded or ...

  4. Swing-door operator - Wikipedia

    en.wikipedia.org/wiki/Swing-door_operator

    Some are built on top of a standard door closer. To open the door, the operator forces the closer in the opening direction. Then, the closer closes the door. The user may open the door manually, using just the door closer. In case of power failure while the door is open, the closer itself closes the door. Some are built without a door closer.

  5. Electromagnetic door holder - Wikipedia

    en.wikipedia.org/wiki/Electromagnetic_door_holder

    An electromagnetic door holder (electromagnetic door holder and release or hold-open device, sometimes informally called a mag hold open or electric doorstop) is a simple electromechanical mechanism which can be used to hold a fire door or security door open until given a signal to release.

  6. Chamberlain Group - Wikipedia

    en.wikipedia.org/wiki/Chamberlain_Group

    Clicker — a line of universal garage door remotes. Chamberlain, LiftMaster, and Craftsman have interchangeable parts, primarily the gear and circuit boards. The greatest difference between the brands is that Chamberlain and Craftsman operate on a square shaped split-rail system, while LiftMaster consists of one single solid piece of inverted ...

  7. Remote keyless system - Wikipedia

    en.wikipedia.org/wiki/Remote_keyless_system

    On cars where the trunk release is electronically operated, it can be triggered to open by a button on the remote. Conventionally, the trunk springs open with the help of hydraulic struts or torsion springs, and thereafter must be lowered manually. Premium models, such as SUVs and estates with tailgates, may have a motorized assist that can ...

  8. These 8 Radar Detectors Are the Ticket to More Informed Driving

    www.aol.com/8-best-radar-detectors-2024...

    This low-cost detector has impressive range and all the requisite features, including GPS for low-speed false-alert muting, manual marking of up to 100 known radar locations, and speed-camera alerts.

  9. Switch - Wikipedia

    en.wikipedia.org/wiki/Switch

    The most familiar form of switch is a manually operated electromechanical device with one or more sets of electrical contacts, which are connected to external circuits. Each set of contacts can be in one of two states: either "closed" meaning the contacts are touching and electricity can flow between them, or "open", meaning the contacts are ...

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