This is a 6 gang rocker switch panel with dual USB port, cigarette lighter socket and voltmeter which can be widely used for most 12-24V cars, RV, caravans, trailers, buses, boats, yachts, marine etc. Rhos and CE Certify, Totally Environment Friendly Short circuit / Overheat protection Product Dimensions: 18 x 11 x 9cm, Panel is pre-wired, Includes 4x Stainless Steel Screw Output circuit protection, overload protection & reverse polarity protection .