Nema 5-15P to SS2-50R: Rated at 125V/ 3,750W 5-15P male to SS2-50R female locking connector with LED Power Indicator, suits for plugging camper built with 50 AMP twist lock power inlet into 15 AMP power source. Tightly Lock: L5-50R female twist lock connector is equipped with threaded ring, avoids cord slipping from holster and lock tightly for secure of use. Sturdily Made: ETL listed, a thick 3-wire 10-gauge 100% copper wires in PVC rubber, features excellent corrosion and overheating resistant , providing quality trust. More Convenient & Neater: Do Not have to drag the BIG CORD out when you just want to plug-in at home to cool down the fridge, takes up less space / saves wear and tear / easy to storage. Wide Application: Works great for plugging in RV to regular 15amp 120V house power or from a small portable generator (Lighting and charging battery) in case there is no 50 amp service.