My pool system consists only of RS-6 and wall remote (the one pictured in the previous post), I don't have any other handheld remotes.
So this is the type of RS6 I have:
Which is connected to this:
Oh, so it's hardwired but looks like the square wireles PDA I inherited when I bought my place a few years back (with the pool being installed probably 5-10 years prior to that).
It *may* be different in terms of codes vs. the ones other folks have seen. Are you up for some investigation?
If so, can you reconnect and record the aquadump output for your remote as you go through a few menus and press through all the buttons? Please try and note when/which button you press as you go along. We can eyeball the RS485 protocol and see if there's anything we can do.
OTW, sorry but I don't know that I can help. AFAIK, everyone so far, myself included, has been using a wireless PDA or wireless square-type remote.