[RV Adapter] This adapter can power a 30 Amp RV with a portable generator. The NEMA L5-30 outlet is used to install generators, campgrounds, marina docks, and travel trailer. [Heavy Duty Protector Rubber] The power cord is Anti-Cold weather rubber that stays flexible in cold weather. Avoid the trouble of straightening frozen power lines. [Disconnect Handle] Pull-out handle design provides better stability when inserting and pulling out without damaging the cable convenient storage with hooks when not in use. [Well-identified Colors] The yellow color makes it visible in poorly lit or cluttered areas. It is not affected by rain or other factors, except for discoloration from prolonged exposure to sunlight. [UL Listed] Oviitech adapter has been tested and verified to meet UL standards for safety. If you have any questions, please contact us. We will reply to you within 12 hours.