This Harmony 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, 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.