A simple little device to use for any RVer who hooks up to a power 
pedestal. It is very easy to use. With it you can safely check the 
campground power outlet for any possible faulty wiring that could damage
 your RV electrical systems or cause an unsafe condition. It is one of 
the only ways you can check for a condition called “Hot Skin” where the 
RV metal frame becomes electrified and very dangerous. For more 
information on this please check out the 
No-Shock-Zone website.