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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.
Door and window sensors are also implemented in most home security systems. One part of the system is installed on the door or window itself while the other part is installed on the frame of the door or window. The two part system connects securely when a door or window is closed, creating a security circuit. [5] Window sensors use a range of ...
Electric eye for a garage door opener. An electric eye is a photodetector used for detecting obstruction of a light beam. An example is the door safety system used on garage door openers that use a light transmitter and receiver at the bottom of the door to prevent closing if there is any obstruction in the way that breaks the light beam.
In November 2013, Ring was founded as Doorbot by Jamie Siminoff. Doorbot was crowdfunded via Christie Street, and raised US$ 364,000, more than the $250,000 requested. [1] [4] [5] Siminoff's team envisioned the product's concept as an "alarm system literally turned inside out" in comparison to other security systems, describing it as a "pre-crime" system. [6]
There are both two-way RF systems and one-way RF systems in use that use both licensed and unlicensed RF bands. In a two-way or "wake up" system, a radio signal is normally sent to an AMR meter's unique serial number, instructing its transceiver to power-up and transmit its data. The meter transceiver and the reading transceiver both send and ...
Remote alarm systems are used to connect the control unit to a predetermined monitor of some sort, and they are available in many different configurations. Advanced systems connect to a central station or first responder (e.g. police/fire/medical) via a direct phone wire, a cellular network, a radio network, or an IP path.
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 ...
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 ...
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