If your garage door sensors are outside of this range remove them entirely from the garage door frame and install leveled inside the safe zone.
Garage door photo eye beam width.
It consists of two units installed about 4 inches from the floor on each side of the door.
If something breaks the beam while the door is closing the opener motor automatically reverses direction and opens the door.
These sensors sit either side of your garage door near the ground.
Higher than that can miss many low lying objects including pets.
The other unit is a reflector.
If the photo eye senses an obstruction it stops the door from closing and potentially prevents damage or injury to a vehicle.
The second is photoelectric.
Lower is easy to stand above with a foot on either side.
Proper height for a garage door sensor is 4 to 6 inches 10 2 to 15 2 cm.
One unit emits an infrared beam invisible to the naked eye.
The photo eye of an automatic opening garage door is a safety feature.