WEATHER-RESISTANT AND EASY TO USE: Designed with a waterproof cover, flexible cord, and ergonomic handle. This surge protector is meant to withstand rain, wind, and snow. ANALYZE YOUR CIRCUIT - Test the quality of your connection, as well as wether you have wired correctly with indicating leds allowing you to use the RV surge protector with ease. SAFETY IN MIND - 30 AMP Surge Protector is safe to use with a water resistant cover and diagnostic LEDs to provide fault indication for the following wiring faults: Correct Wiring, Open Ground, Open Neutral, Reverse Polarity, Hot/Ground Reversed, No Power. UL LISTED - 16 inch, 30 Amp, 125 Volt, 3750 Watt, 2100 Joule Surge Protection, TT-30P to TT30R RV Cord Reinforced Blades For Durability LIFETIME REPLACEMENT WARRANTY - Iron Forge Cable stands behind its RV adapter plugs 100%. Register online for a free lifetime warranty.