I know the best kind are the ones which would be wired into the system, but saw this today and wondered if it would be any good. Is this a "better than nothing" or "you get what you pay for" situation...
I have been following this thread and had to reply. I have had the portable PI unit for two years now. Never a problem. This weekend the power was cut to my trailer three times with a low voltage code. Today the guy next to me woke up and nothing 12 volt is working in his trailer. Coincidence or not, I am glad I was protected.