Most (all?) US cars seem to have a three-button "programmable remote" embedded (typ above the rear view window) to handle garage door openers without having to clip a "remote" to the vehicle's visor.
I'd like to know what that device is capable of -- by understanding the sorts of things that it would likely control (and the requirements imposed by those things).
I see GDOs operating in the 300-400MHz band -- "intermittent duty".
I've seen a report of a 2.4GHz opener but I think that to be in error (more research required).
Nearest I can tell, a typical user would "pair" these with GDOs and/or "electric gates" (a GDO in another form?).[I have one of the three buttons "bound" to the garage light as the light on the GDO is lame and only of use in certain circumstances]
Anything else that *might* see such use? I.e., something to control from within the car in order to enter/depart from a property?
Any idea what this seemingly universal 3-button device is called, in the trade? I.e., how to chase down further information (USPTO) on it?
Or, ideas as to how it is trained? (do all remotes follow some preordained data pattern?)