Photosensors represent a safety feature provided with your garage door and garage door opener. Not only are they gazing into each-others eyes, they are ready to respond if anyone interrupts their gaze.
Running between the photosensors is an infra-red beam, similar to the infra-red beam you probably saw in one-or-more episodes of Mission Impossible. With the infra-red beams in the movies, as well as employed for actual security systems, if the gaze of the beam is broken, an alarm begins to ring, steel doors slam shut so the perpetrators can’t get away.
The infra-red beam between the photosensors at the bottom of your garage door generally don’t operate the same kind of equipment. Nothing nearly as exciting will happen if the beam between the garage door photosensors is broken. Instead of an alarm, the door simply stops.
When the infra-red beam between garage door photosensors is interrupted, the power to the motor of your garage door opener is cutoff. The motor stops running the garage door stops moving.
The purpose of the photosensors and their infra-red beam is to ensure that the door doesn’t come down on your car or other toys or equipment in the way of the door. It’s also to ensure that the garage door doesn’t come down on you or a loved one.
Even if it isn’t a loved one who is saved by your photosensors and their infra-red beam, the safety is a great feature with your garage door and garage door opener to protect friends who come to visit, too. The federal government agrees. The feds actually mandate garage door companies to install safety features, such as photo sensors, when your garage door and/or garage door opener is installed.
It’s not as exciting a security system as the one built around the Crown Jewels of England, but it is effective for keeping your garage door operating properly.
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