Is the transom surf switch part of the stereo transom remote or is it standalone?

if it's part of the stereo setup then cool, just software (it's useless IMO but no added cost or failure modes)

If it's standalone for the sole sake of being a sur side selector it seems to me like useless fluff that's just going to be one more thing to break (hit it with a wakeboard, kids step on it and knock it off, etc) or fail (water intrusion, toushscreen)