This green flush illuminated button head provides a versatile interface for controlling your machines.It is easily installed and replaced on compatible complete push button units and contact blocks via snap-fit assembly.It is very distinguishable visually at a distance thanks to illuminated, clear color and by touch due to flush element.It minimizes errors in machine control.It is impact resistant, dust resistant, water resistant and vibration resistant thanks to its IP66.It makes it ideal for operation in harsh environments.