This Harmony XB4 triple-headed modular push button has 1 white, 1 red, and 1 black buttons, operates witha spring return / impulse mechanism. It has a metal bezel. This 3-headed push button provides a complete 3 button interface to your machines with a single panel cut-out. It is easily installed into a 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, making it ideal for operation in harsh environments.