Chamberlain 820CB Replacement Safety Sensor
$43.98
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This kit includes two sensors, mounting brackets, and hardware necessary for installation.
It is compatible with most Chamberlain, LiftMaster, and Craftsman garage door openers.
The sensors feature auto-reversing technology to stop and reverse a closing door if the beam is broken.
Chamberlain 820CB Replacement Safety Sensor
$43.98