Progressive Dynamics PD52V 50 Amp Automatic Transfer Switch

The Progressive Dynamics 50Amp Automatic Transfer Switch will monitor your electricity saving you from two power sources entering and possibly creating electrical damage to your RV. If you are using campground power and it goes out, when the generator is turned on it will automatically switch the power to it. Same with if the generator is shut off and you are hooked up to the campground, it will also automatically switch. This unit has a time delay circuit board that ensures the generator voltage is at a stable level before the transfer occurs.