Why doesnt work
The remote may have to be reprogrammed, also make shure the battery is new not just because it,s in a package but because of the freshness date , also check the contac points of the battery in the remote , sometimes they get battery acid on them and could damage it, stiny circuit board ..if all else fails you can purchase a new remote on ebay depending on your garage door opener brand model and frequency ! Hope this helps, Sincerely Glenn
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