Momentary Push Button Switch, URTONE UR125, 1NO SPST DC/AC 36V 2A Metal Shell Suitable for 12mm 1/2" Mounting Hole (Silver) Momentary Type: Push & Hold - ON, Release  OFF Mounting Hole Size: 12mm, Switch Rating: 2A/36V DC/AC, Switch Contacts: 1NO Tiny Momentary Switch: 1/2" diameter, suitable for tight space application IP65 Waterproof & IK08 Protection: Rustproof, can be used in wet or dusty environment Used widely: Great for Horn Button Switch, PC Power Switch, Kill Switch or any circuit controls