The Schmersal ESS21S1.V is a key-operated selector switch designed for industrial control applications. It features a 30 mm barrel size and offers two maintained positions, with the key removable only in the left position for added security. The switch has a robust construction, combining a plastic base with a metal bezel and a round, black operator measuring 36 mm in diameter. Rated IP65, this selector switch provides reliable protection against dust and water, making it suitable for demanding environments. This product is available through BSP Automation, ensuring you have access to dependable industrial automation components.