This Harmony XB5, modular black key selector switch (key no.455) has 2 positions, operates with a stay-put mechanism with key withdrawal on the left position and uses screw clamp terminals.::This key selector switch provides a versatile interface for controlling your machines.::It is easily installed into standard 22mm diameter cut-outs and connected to your control circuits with simple screw-clamp connections.::It provides a secure manner for authorized staff to switch between process or machine operating modes.::It is impact resistant, dust resistant, water resistant and vibration resistant thanks to its IP69, 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.