My fob for my car entry & alarm system is running out of juice. I’ll open it and see if a battery replacement is possible, but I also was wondering about replacements, including better (i.e. cheaper) sources, and/or if I can replace it with any fob or if there is typically something proprietary about each alarm system.
My current fob is this one:
The blah on the back of the fob is:
FCC ID ELVATOC
But a search on that just brings up stuff like the Amazon link, etc.