Not to get far off Terry's inquiry, but a note regarding these units: our original, the touchpad of which looks just like Tim's photo, was replaced under warranty when relatively new because water deactivated it. The replacement, as it turned out, also reacted to rain and wash water, and wouldn't work until it dried. Rather than pay for another replacement after reporting the ongoing issue to my tech at BCS in bend a couple weeks ago, he suggested that he try super-sealing the frame/coach interface and also the touch pad where it mounts inside its frame with silicone. I've yet to try soaking it to see if it will work when wet.
The other thing is they are supposedly capable of turning the porch light on, but apparently that depends on whether the coach has the wire required for that function, which as it turns out, ours in theory does not, according to one tech; although there is such a wire off my Magnadyne module going to relay K23 in the electric bay. Turning on the patio light from outside would certainly be handy when returning home on a dark night, but for whatever reason, our pad won't do that. I see the remotes on Tim's photo don't have a seperate cargo door unlock function. Ours has that plus a cargo lock button, although it doesn't actually function; go figure.
So there is more than one keypad out there and several function options or capabilities with each, not to mention a dependency on your rig's specific prewire configuration, in our case a Magnadyne receiver under the dash access port.
Joel