The sensors use two photo eye lenses that transmit an infrared beam between them.
Garage door laser sensor.
If the sensors are not.
The units are placed near the ground on either side of the garage door.
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Garage door sensors utilize a photo eye sensor and a beam of infrared light that goes between the two units.
If you have a laser level you can use it instead of a string to align your garage door.
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If the beam of light is interrupted while the garage door is closing the door will stop and rise back up.
It installs in minutes by twisting the two wires onto the sensor wires and connecting them to the opener.
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The chamberlain laser parking assist is a small unit that easily attaches to your garage ceiling with one screw or even mounting tape.
Safety sensors include two mounted sections one on each side of the garage door opening.
Do both garage sensors need to be green.
In this case you will set up the level aligned with one sensor then adjust the opposite sensor until the beam of your laser level is hitting the sensor.
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This system allows them to detect obstructions like your car or a kid on a bike.
It is hard wired to you garage door opener s safety reversing sensor circuit.
As long as the beam isn t interrupted the door will open or close normally.
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