The marine emergency cut-off Universal Kill Switch attaches to your life vest while operating a boat or personal watercraft and is designed to instantly cut battery power when detached. Dual circuitry allows kill switch to be wired for either ignition kill or magneto kill depending on the application. The housing is constructed of weatherproof injection molded nylon and Delrin with 1/4" brass terminals. The switch includes a lanyard approximately 15" when coiled and 48" when stretched, which should be replaced if worn, cut, or frayed. Mounting hole is 5/8" in diameter. Maximum panel thickness: 3/8". Maximum 5A draw. WARNING: Switch should be tested for proper function before each use.