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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.
4 Forgotten Dimensions - Replacement Door Opening Mechanism may be too long. 1 comment. 5 Possible new RF frequency in used starting in 2011. 1 comment.
Other sources that may create a false alert include speed signs on the side of the road, automatic door openers in front of stores that use radar to detect when someone is approaching, and even ...
As of 2015, the Z-Wave Alliance reported there were more than 1,400 Z-Wave certified products [3] including light switches, thermostats, door locks, water valves, garage door controllers, sensors and other products. In 2004, HomeSeer released its first hardware product, the ZU0100-001 Z-Wave USB interface.
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 ...
Lighting can be turned on, off, or dimmed with a building automation or lighting control system based on time of day, or on occupancy sensor, photosensors and timers. [9] One typical example is to turn the lights in a space on for a half-hour since the last motion was sensed.
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.
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