Yes, used one when I had a towed, Personal opinion it is the best of the systems out there, It is the ONLY one that gives the motor home driver the same level of control over the brakes (In fact more control) on the "Trailer" (Towed) that a Semi Driver has over his trailer brakes.
You can, without getting out of the motor home driver's seat, Set the brakes on the towed, or disable them, you can adjust the "Gain" (The degree to which they engage as opposed to the motor home) and monitor them.
No other system gives you that kind of control from the motor home driver's seat (At least that I know of).
Plus, it includes a "Towed Charge" lead and keeps the towed charged.
Just make sure you do not short the blue and red wires together, that will take out the controller in the motor home.
Home is where I park it!