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bontree

Garage door remotes

bontree
13 years ago

I have a Craftsman 41A5021-3B M#193.53674SRT-1 1997 Garage door opener for which I lost 1 remote control. I found a replacement Model 970LM Lift-Master 390 MHz. Is it possible to install both remotes to the same receiver/operator? When I install the second code, the first remote seems to be cancled? Do I need two identical remotes? Thanks for a reply!!

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