Magnetic wireless light clusters give essential light functions with no wiring required. Designed and manufactured for metal trailers, lorries, agricultural machinery, tractors, and other vehicles up to 20m long. EU Plug wiring configurations and vehicles fitted with a 7-pin plug towing trailers. Includes wireless transmitter that works with 7-pin plugs only. 5-Functions: brake lights, rear turn signal lights, rear position lights, license plate lights and return reflectors. Dual USB charging cable supplied allowing for both lights to be charged simultaneously. Supplied in storage case.