Check the listing for details. RV Surge Protector 30 Amp Briidea Adapter Circuit Analyzer W/ LED Light #L11. Condition: New. Listed at 15.00 USD. Features & details NEW GENERATION: This is an incredibly handy piece of equipment to have with you wherever you go. Three ears are added on the shell, which is ergonomic design for easy removal from outlet, making you plugging and unplugging easier, is the ideal choice for your camping travel SURGE PROTECTION: Our briidea RV adapter circuit analyzer are used to detect whether electrical piles in campground are wired wrong, ensure the safety of your electronics, surge protector up to 1050 joules, protect your RV from power surges LED LIGHT INDICATOR: Plug circuit analyzer into the receptacle before plugging in the camper cord. The LED light illuminate to show power status, when the indicator light shows the wrong connection, it will remind you, avoid your RV from sustained permanent damage SAFE AND RELIABLE: Compared with ordinary materials, our circuit analyzer housing use flame retardant material, and the plug is forged from intergrated copper sheet (thickness up to 1.8mm), ensure good conductivity, safety and avoid short circuit, ensure your security 30 AMP MALE TO 30 AMP FEMALE: 30 Amp male to 30 Amp female adapter for you to convert the power at campground to fit for your 30 Amp RV, a easy power conversion, worry-free about the mismatching power at campground, more stable and safer wire connection. 125V/3750W