Garage Door Alarm Sensor

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Garage door alarm sensor.

Contact aka door sensors can be used for much more than just doors and windows if you re creative enough. Fits any craftsman garage door opener manufactured after 1997. This system allows them to detect obstructions like your car or a kid on a bike. Chamberlain liftmaster craftsman garage door opener replacement safety sensors g801cb p includes 2 sensors mounting brackets and hardware 4 7 out of 5 stars 1 669 38 99 38.

In garage door sensors. 4 2 out of 5 stars 61. Garage door sensors work by shooting a beam of infrared light across the entrance of your garage to the sensor on the other side. As long as the beam isn t interrupted the door will open or close normally.

2 safety sensors easy to install mounting brackets 3 ft extension wire and connectors. The replacement safety sensors project an invisible light beam across the inside of the garage door to prevent accidents and are required for safe use of all chamberlain garage door openers. In garage door sensors. Whenever there is an obstruction the garage door will automatically reverse before causing any damage.

The infrared beam from the garage door opener sensors isn t able to be seen by human eyes. The sensors are normally about 4 inches above the ground.