These brass ignition switches are suitable for marine environments.Two-position switch (Model 379016) offers Off-On/Ignition for engines with a separate starter pushbuttonThree-position switch (Model 211896) offers Off-Ignition-Ignition/StartThree-position switch (Model 485799) offers Off-Ignition-Ignition/Start and weather-resistant key slot with rubber bootFour-position switch (Model 109399) offers Accessory-Off-Ignition/Accessory-Ignition/StartKey FeaturesCorrosion-resistant brass constructionBrass screw terminalsSpring return to Ignition position (returns to Ignition/Accessory on Model 109399)Key removable in Off positionIncludes two keys with mixed codes for added securityModel 485799 includes weather-resistant key slot with rubber boot