ELECTRONICS RELA Y S P art Description 41150 12V 40A SPDT K F rame PCB Mount w Cover Electromechanical Relays P art Description 41155 12V 20A SPDT PCB Mount P art Description 41160 12V 2A DPDT PCB Mount 42020 24V 2A DPDT PCB Mount P art Description 42025 24V 5A SPDT PCB Mount 130 18005675483 A relay is an electrically activa ted s witch tha t shortens the distance current has to tra vel from the ba tter y to wha tever device is being po wered This ensures tha t the optimum amount of current is efficiently delivered to lights horns or an y other accessor y