Winch Remote Contactor Control Solenoid Relay 12V 250A Twin Wireless Remote Kit Car Motorcycle Off-Roaders Purpose: The winch relay operates on the principle of electromagnetic induction, using a small current to control a larger current for automatic switching.Its main components include electromagnetic coils, armatures, contacts, and springs.In automotive applications, it is used to control devices such as lights, wipers, electric canopies, and electric winches for convenient.It is also integrated into firefighting and rescue vehicles or road clearing vehicles to perform tasks like material dragging or obstacle removal.In special vehicle traction systems, it serves as a winch device for trucks, off-road vehicles, farming-related vehicles, and all-terrain vehicles (ATV), enabling self-rescue and escape in harsh road conditions.In marine and industrial settings, it controls winches for ships to retract anchor chains or manage the positioning and handling of heavy loads. Only the items listed are included; other products are not part of this package.Measurement may vary by +/- 1-3 cm due to manual measurement. This is an aftermarket accessory.Brand names and model numbers are referenced strictly for compatibility information.