Shop Nilight 50AMP RV Power Inlet 125/250V Shore Power Inlet Receptacle NEMA SS2-50P ETL Listed Enclosed Lockable Flanged Inlet with Waterproof Cover for RV Camper Caravan Motorhome Van in high quality, support 2 years warranty. Our RV Power Inlet has been tested at an ETL laboratory and found to meet all applicable Standards for Safety published by relevant NRTLs. ETL certification follows the same safety standards as Underwriter Laboratories or UL.