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  2. Garage door opener - Wikipedia

    en.wikipedia.org/wiki/Garage_door_opener

    The electric overhead garage door opener was invented by C.G. Johnson in 1926 in Hartford City, Indiana. [1] Electric Garage Door openers did not become popular until Era Meter Company of Chicago offered one after World War II where the overhead garage door could be opened via a key pad located on a post at the end of the driveway or a switch inside the garage.

  3. AS-Interface - Wikipedia

    en.wikipedia.org/wiki/AS-interface

    Failed slaves can be easily replaced, the master automatically redirects them. Safety at Work is the concept of functional safety used in ASi-3 technology. This means that safety-related components such as emergency stop actuations, door interlocks or light grids can be used in the AS-Interface network.

  4. Output signal switching device - Wikipedia

    en.wikipedia.org/wiki/Output_Signal_Switching_Device

    An output signal switching device (OSSD) is an electronic device used as part of the safety system of a machine. It provides a coded signal which, when interrupted due to a safety event, signals the machine to shut down. It works by converting the standard direct current supply, usually 24 volts, into two pulsed and out-of-phase signals.

  5. California company recalls over 540,000 tires due to lack of ...

    www.aol.com/california-company-recalls-over-540...

    They can also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 or 1-800-424-9153, or go to www.nhtsa.gov.

  6. Sliding door operator - Wikipedia

    en.wikipedia.org/wiki/Sliding_door_operator

    The simplest sensor consists of a light beam aimed across the opening: when the beam is broken by an obstacle, the operator prevents the door from closing. Infrared and radar safety sensors are also commonly used. Other sensors such as resistance-sensing motors can be used to reverse the closing action of the door after an obstacle is encountered.

  7. Daniel Penny found not guilty in NYC subway chokehold death

    www.aol.com/news/daniel-penny-found-not-guilty...

    NEW YORK -- Daniel Penny was found not guilty of criminally negligent homicide in the chokehold death of Jordan Neely on a New York City subway car in 2023.. Penny, a 26-year-old Marine veteran ...

  8. What we know about mysterious drone sightings - AOL

    www.aol.com/know-mysterious-drones-reported-over...

    Mysterious flying objects overhead. Concern and confusion. And calls for military intervention. This isn’t the plot of “War of the Worlds,” but rather the result of numerous possible drone ...

  9. Limit switch - Wikipedia

    en.wikipedia.org/wiki/Limit_switch

    A limit switch with a roller-lever operator; this is installed on a gate on a canal lock, and indicates the position of a gate to a control system A limit switch mounted on a moving part of a bridge

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