This key selector switch provides a versatile interface for controlling your machines 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 IP66 / IP67 / IP69 / IP69K, making it ideal for operation in harsh environments It is easily installed into standard 22mm diameter cut-outs and connected to your control circuits with simple screw-clamp connections High performance International standards & certifications ( Marine certification, IP65, Type13 and 4X)