The C&K COMPONENTS 103-4001-001 is a versatile PCB keyswitch ideal for applications requiring reliable and compact switching solutions. It's designed for use under overlays or with RK 90 keycaps, and is available in print and SMD versions for compatibility with various assembly methods. The keyswitch offers a distinct key click and excellent switching reliability, making it suitable for data entry systems, industrial control panels, and other applications where precise and dependable key actuation is essential. It meets UL approval standards for the American market and is available with various illumination options and contact configurations to suit specific design needs.