This Harmony 9001K, key operated selector switch with Ronis key number 455 has 3-positions, operates with a stay-put mechanism. It has a chromium-plated metal bezel and the key can be withdrawn on center position. This key operated selector switch provides a versatile interface for controlling your machines. It is easily installed into a standard 30mm diameter panel cut-outs and 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 IP66, making it ideal for operation in harsh environments. Impact and corrosion resistant metal bezel and body ensures product continues to operate even after severe accidents.