This marine Emergency Cut-Off Switch attaches to your life vest, and instantly cuts battery power when detached from a personal watercraft or boat. Depending on your application, the dual circuitry allows this Emergency Cut-Off Switch to be wired for either magneto kill or ignition kill. Emergency Cut-Off Switch is designed for use with either Coil or Magneto Ignition Systems. Alternate wiring terminals are available based on the vehicle's ignition. RoHS Compliant.