Shop Nilight 30AMP RV Power Plug Kit Outlet Box Shore Power Inlet Receptacle with Cover Ring Twist Lock ETL Listed 125V NEMA L5-30P L5-30R Female Plug for RV Camper Caravan Trailer 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.