This Harmony XB5, double-headed modular push button has 1 green, 1 red button and 1 central white pilot light, operates with a spring return / impulse mechanism and uses screw-clamp terminals. It is marked with "I" and "O" symbols. This double-head button provides a complete 2 button interface to your machines with a single panel cut-out. It is easily installed into standard 22mm diameter cut-outs and connected with simple screw-clamp connections. Its schematic is clearly distinguishable 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 and 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.