Sierra MP40970-1 Emergency Cut-Off Switch 2 WireThe Sierra Emergency Cuff-Off Switch kills the ignition when the lanyard is pulled. Coiled Lanyard; For use with conventional or magneto ignitions; Unique design keeps plunger down when lanyard connected; Seals out moisture; Makes re-connection easier; Panel thickness up to 1/4''; 4 Terminals allow selection of normally open or normally closed circuit; Interchangeable with: Cole-Hersee; M-597; Seadog; 420487-1;