Alpinetech 16mm 5/8" Anti-Vandal O-Ring LED 2.8V/1.8V Momentary Metal Push Button Switch Flat Top Shallow Depth for Box Mod (100/150 ohm Resistor Included for 4.2V) (White) Momentary Type - Push & Hold ON, Release OFF 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 or Box MOD