Chamberlain 820CB Replacement Garage Door Safety Sensor, 2-Pk. - Quantity 1 7-70-750-08 Brand Name: Miracle-Gro

Brand Name: Miracle-Gro

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It can be used to lower the pH of soil

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Brand Compatibility: Fits Carefree

Chamberlain 820CB Replacement Garage Door Safety Sensor, 2-Pk. - Quantity 1 7-70-750-08 Brand Name: Miracle-GroThe 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. Whenever there is an obstruction, the garage door will automatically reverse before causing any damage. Chamberlain compatible, these sensors replace defective or damaged sensors for every Chamberlain Garage Door Opener manufactured after 1997. Brand Name: