Ir Garage Door Sensor

The legislation was put in place requiring garage door sensors to be placed on every garage door in 1993.
Ir garage door sensor. Garage door sensors are safety devices that prevent the door from closing on people pets or objects in the doorway. The sensors are located above the floor at each side of the door opening and. The units are placed near the ground on. But how do the sensors work.
New genie overhead garage door opener infrared safety sensors series ii wire. Look at both the garage door sensors. Liftmaster 821lm 4 pack myq garage universal smartphone garage controller sensor. How does the system know there is something blocking the way.
Higher than that can miss many low lying objects including pets. If one of the leds is blinking the sensors need to be realigned. Garage door sensors utilize a photo eye sensor and a beam of infrared light that goes between the two units. Reno bx4 loop detector sensor 9 35 ac or dc.
Proper height for a garage door sensor is 4 to 6 inches 10 2 to 15 2 cm. Each sensor has an led light on the exterior of the sensor.