The Dometic SmartStart accessory for RVs is a soft starter that reduces AC start-up power demand by as much as 75%. With less compressor power draw, it produces less noise on air conditioning start-up. The installation of Dometic SmartStart does not void your Dometic AC warranty. Small and lightweight design with IP-65 waterproof enclosureEnables ability to run two ACs off one 30 AMP service if no other appliances are runningEnables running an AC with a small generator or a solar power inverter as small as 2,000W without faultingComes pre-wired for simple installation so no cutting or crimping of wires required