This Harmony XB4 illuminated modular red push button operates with a spring return mechanism, is supplied with 110V to 120V AC, uses an integral LED.It has a metal bezel.This illuminated push button provides an ergonomic and visual interface for controlling your machines.It is easily installed into standard 22mm diameter panel cut-outs and connected to control circuits with classic screw-clamp connections.It is clearly distinguishable visually at a distance thanks to a bright and long lasting LED illumination.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.