Featuring a snap-action switching system, the Series 56 pushbutton from EAO protects itself from damage. A stable force is always applied to the switch unit independent of the one exerted on the lens. The pushbutton includes a 34-mm dia. aluminum lens. The Series 56 features protection to IP67 against water and dirt ingress. With flush-mounting, it creates a tamper-proof unit that will resist abusive operation.