Range extender for a wireless gate opener

[Paul_B]

@cjamoody

I'm not sure. There's a whole heap of key fobs, and no obvious RTC battery. When the batteries die they don't need reprogramming or anything.

Rolling code keys each have a unique individual code pattern when manufactured, in no way related to whether they have been powered or not. Each key must therefore be validated by or "programmed into" the receiver.