Chamberlain® Garage Door Opener Safety Sensor Photo Eyes, 0.5lbs, 2 Pack

Chamberlain Garage Door Opener Safety Sensor Photo Eyes replacement safety sensors project an invisible light beam across the inside of the garage door to prevent accidents. These are required for safe use of all Chamberlain garage door openers. Whenever there is an obstruction, the garage door will automatically reverse, preventing any damage. These sensors replace defective or damaged sensors for every Chamberlain garage door opener manufactured after 1997.