Surge protection: simple RV adapter circuit analyzer is used to detect whether the stacks in the camping site are wired wrongly to the safety of electronic . The surge protector is up to 1050 to your RV from power surges. .LED indicator light: Insert the circuit analyzer into the socket inserting the camping line. The LED lights are on to show the power status, and when the indicator shows a wrong connection, it will remind you to avoid continuous permanent damage to your RVSafe and : Compared with ordinary materials, circuit analyzer housing uses -retardant materials, and the plug is from an integrated copper plate (thickness up to 1.8 mm) to good electrical conductivity, safety and avoid short circuits to your safety30 AMP male to 30 AMP female: 30 AMP male to 30 AMP female adapter, used for power conversion on camping grounds, the wire connection is more stable and . 125 V / 3750 WEasy to use and portable: No matter where you go, it is a convenient device. The wavy shape is easy to unplug from the socket, and the ergonomic grip design increases friction, allowing you to plug and unplug. It is a perfect choice for camping trips.colour:BlackMaterial:ABS plasticPackage Contents:1 x RV Surge AdapterOnly the above package content, other are not included.Note: Light and different displays may cause the color of the item in the a little different from the real . The measurement allowed is +/- 1-3cm.