This Harmony XB4 plain lens illuminated modular white push button operates with a spring return / impulse mechanism, is supplied with 250V AC/DC.It has a metal bezel.This illuminated push button provides an ergonomic and visual interface for controlling your machines.It is easily installed into a standard 22mm diameter cut-outs and connected to control circuits with classic screw-clamp connections.It is clearly distinguishable visually at a distance thanks to its illuminated head and clear color.It is impact resistant, dust resistant, water resistant and vibration resistant thanks to its IP66/IP67/IP69/IP69K, making it ideal for operation in harsh environments.