The Keyance FS-V2-1R is a Fibre optic switch designed by KEYENCE, a trusted brand in the industry. Comes with FU 40 head, I used this for a test purpose only.This switch is specifically designed for use in electrical equipment and supplies, particularly in applications that require precision and reliability. With its reed switch technology, the Keyance FS-V2-1R ensures accurate detection and control of magnetic fields, making it an essential component for various industrial and commercial settings. Its durable construction and dependable performance make it a popular choice for businesses looking for high-quality magnetic switches.