This Harmony XB5, modular blue push button operates with a spring return / impulse mechanism and uses screw clamp terminals.::This push button provides a simple and robust control to machines and processes.::It is easily installed into standard 22mm diameter cut-outs and connected with simple screw-clamp connections.::Its schematic is clearly distinguishable visually at a distance thanks to clear colors and markings, minimizing errors during initial wiring and later maintenance operations.::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.::Its plastic bezel makes it ideal for applications requiring good resistance to chemical agents and/or double electrical insulation.