That station doesn't require the 24VDC AUX
power wires (or 12VDC if it's actually old enough to match the drawing Brucek found), so at most it only needs four wires instead of six. You can see the other two wires zip-tied off inside the station. A clever person might have been inclined to
wire the 5-pin
connector with pins 1-4 matching the standard 6-pin version... With solder only on pins 1 & 5 it looks like someone decided to be creative instead of consistent, so your best bet is to pull the corresponding plugin station off the wall to see how that
connector is wired and make this one match.
Oh, and it's entirely possible that only the two ULP wires (the black/white pair normally on pins 1&2) were actually used. Given that it's using a non-standard
connector, it's likely that "One Touch" is not connected to anything on the other end. That's fine because that feature is just used to allow the
portable station to control different things when you
plug it in at different locations if the
system is programmed that way. ULP is polarity-free, so it doesn't matter which way you connect those two wires.