Alpinetech 16mm 5/8" Anti-Vandal O-Ring LED 2.8V/1.8V Momentary Stainless Steel Metal Push Button Switch Dome Top Shallow Depth (Blue) Momentary Type - Push & Hold ON, Release OFF Short depth High IP65 Protection for used in wet or dusty enviroment. Stainless Steel material for resistant to wear and abrasion. Great for electronmagnetic Starter, relay, Horn Button Switch, PC Power Switch