SURGE PROTECTION: Our RV adapter circuit analyzer are used to detect whether electrical piles in campground are wired wrong, the safety of your electronics, protect your RV from surgesLED LIGHT INDICATOR: Plug circuit analyzer into the receptacle before plugging in the cord. The LED light illuminate to show status, when the indicator light shows the wrong connection, it will remind you, avoid your RV from sustained permanent damageSAFE AND RELIABLE: Compared with ordinary materials, our circuit analyzer housing use flame retardant material, and the plug is from intergrated copper sheet, good conductivity, safety and avoid short circuit, your security30 AMP MALE TO 30 AMP FEMALE: 30 Amp male to 30 Amp female adapter for you to convert the at campground to fit for your 30 Amp RV, a easy conversion, worry-free about the mismatching at campground, more stable and safer wire connection. 125V/3750WEASY TO USE & PORTABLE: This is an incredibly handy piece of equipment to have with you wherever you go. Contoured shape for easy removal from outlet, easy ergonomic grip design, increase friction, making you plugging and unplugging easier, is the perfect choice for your camping travelCondition: NewMax.Current: 30 AMax. Rating: 3750 W/50-60 HZInput Voltage: 125Vfor RV, TrailerColour:yellowMaterial:plasticPackage Contents:1 x RV surge protectorOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.