1All in 1: With multiple functions such as diagnostic LEDs, open circuit, open neutral and reverse polarity detection, miswiring indication, surge fault indication. 2Weatherproof Cover: This surge protector is designed with a waterproof cover to protect the circuit from rain, wind, sandstorms and is a good design to reduce the risk of short circuits or fires. 3Professional Design: Smart Rv surge protector is designed with easy to use handle, sturdy pull handle, locking bracket, and the bright 3color LED indicator, practical to use. 4Wide Application: The voltage of the circuit surge protector is 125V, and the current is 30A, with wide range of uses, suitable for Rv, camper, trailer, truck, jet ski, yacht, etc. 5Premium Material: Rv power defender is made of premium Abs, metal and rubber material, fire retardant, high temperature resistant, effectively protect your Rv.