This key operated selector switch provides a versatile interface for controlling your machines,It is impact resistant, dust resistant, water resistant and vibration resistant, making it ideal for operation in harsh environments,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,Tha package dimensions are 5.33 cm (width) x 16.51 cm (length) x 5.84 cm (height),High performance International standards & certifications (Marine ABS certification, Type 1, 2, 3, 3R, 4, 6, 12 and 13)