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Question About Craftsman Garage Door Opener 139.53978SRT
On the safety light Why is one side green and the...

On the safety light Why is one side green and the other yellow?

Asked by Darroll on 08/23/2014 1  Answer

ManualsOnline posted an answer 10 years, 3 months ago

The ManualsOnline team has found the manual for this product! We hope it helps solve your problem. Get the Manual Here

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