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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.
Chamberlain's "myQ" technology is embedded in garage door openers and lights, [5] can be added to Wi-Fi networks to control these devices and is being incorporated into future home products, all through a monthly subscription. [6]
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.
The few options available included a power moonroof, a universal garage door opener, 7 seven to 8 eight passenger seating an electrochromic rearview mirror (filtering out headlight glare from vehicles seen in the mirror), and a premium audio system (a seven speaker, 290-Watt audio system with a 6-disc front console-mounted CD-changer, and rear ...
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When seen through a digital camera, the diode appears to be emitting pulses of purple light. Most remote controls for electronic appliances use a near infrared diode to emit a beam of light that reaches the device. A 940 nm wavelength LED is typical. [33] This infrared light is not visible to the human eye but picked up by sensors on the ...
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