[kozzy]

I use it EVERY time, has saved me a few. I have the Progressive Industries , and it is hard wired right into my unit.
Their customer service is great too, one of the circuit boards went bad, called them, they sent me a new one right out and it was user serviceable. Very easy to install the unit yourself too. I installed mine right being my AV panel, and mounted it right to the floor of the camper in the wall.. Have the remote displayed ran up to my control center with all the other switches, so I always know what's going on with Power in my RIG.