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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. The Genie Company - Wikipedia

   en.wikipedia.org/wiki/The_Genie_Company

   In May 1954, the Alliance Manufacturing Company first produced its own garage door opener and called it Genie. [2] In 1983 the company entered the home and shop vacuum market, and in 1985 it changed its name to Genie Home Products. [2] Overhead Door Corporation purchased the company in 1994. [2] The Genie Company is headquartered in Mt. Hope ...

4. Garage door - Wikipedia

   en.wikipedia.org/wiki/Garage_door

   Modern openers have “force settings” that make the door reverse if it encounters too much resistance while closing or opening. Any garage door opener sold in the United States after 1992 requires safety eyes—sensors that prevent the door from closing if obstructed. Force settings should cause a door to stop or reverse on encountering more ...

5. Rolling code - Wikipedia

   en.wikipedia.org/wiki/Rolling_code

   The Microchip HCS301 was once the most widely used system on garage and gate remote control and receivers. The chip uses the KeeLoq algorithm. The HCS301 KeeLoq system transmits 66 data bits: 34 bits are not encrypted: a 28-bit serial number, 4 bits of button information, and 2 status bits (repeat and low battery indicators).

6. i-Opener - Wikipedia

   en.wikipedia.org/wiki/I-Opener

   The i-Opener was a low-cost internet appliance produced by Netpliance (later known as TippingPoint) between 1999 and 2002. The hardware was sold as a loss leader for a monthly internet service. Because of the low cost of the hardware, it was popular with computer hobbyists, who modified it to run desktop PC software without the internet service.