The M.O.S.F.E.T. CONTROL solid-state control pack is designed to give current owners of WARN low profile winches with Series Wound motors the most robust and reliable control pack possible. It replaces the electro-mechanical solenoid and uses no moving parts to control the Power In, Power Out and Stop functions of the winch. The MOSFET module is sealed to resist any water and contaminate infiltration. It's also covered by a thick aluminum shell for added durability and heat resistance.