Another Garage Door Opener Question



Question:
I'm trying to understand just what happens when you "learn" the opener remotes. I also have a three button built in remote in my vehicle. I'm trying to figure out (without experimenting) if the remote "learns" from the head unit, or does the head unit "learn" the remote. What I'm trying to accomplish (if possible) is to "learn" the same button to two or more garage doors. (not in the same location).

Answer:
I'm reasonably sure that the "learning" relates to the "rolling code" used in openers nowadays. The remote transmits a "magic code number" which changes to a new number in a predetermined pattern each time the remote's button is pressed. The head unit's receiver also increments the next code it will be looking for each time it receives a valid code, but it has the ability to accept a range of several codes "after" the last one it responded to. That last feature lets you press the remote's button several times "out of range" and still have it work when the receiver can hear it. But if you press the remote too many times when it's out of range, you use up the available span of codes the receiver will respond to and that's when you have to "retrain" the receiver.





Categories