Product Introduction Designed to cut off power to the negative terminal, it offers convenience, security, and power management for your vehicle's 12V battery system (200A capacity). Ideal for cars, trucks, RVs, and more. Key Features Dual Remote Control: Comes with 2 remotes, allowing you to easily cut off or restore battery power from a distance. Reliable Construction: Built with quality components, including silver contacts, 6 - square copper wires, and a nylon flame - retardant shell. Easy Installation: Follow simple steps - remove the original negative power line, connect it to the relay, fix the relay to the battery negative pole, and connect the red wire to the positive pole.