Chamberlain Garage Door Monitor Add-on Sensor
The CLDM2 is an Add-on sensor for the CLDM1 Kit. Mount one to each door. Works with 2, 3, or even 4 Garage Doors. Monitor the status of your garage door from inside your home. No longer will you have to run downstairs or go outside just to see if you or your children have left the garage door open.
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