Available. The Keyence FS-N40 is a digital fiber optic sensor designed for precise and reliable detection in various industrial applications. This expansion unit operates as a zero line type, connecting seamlessly with the main unit to enhance system capabilities. It features a red, four-element LED light source with a wavelength of 660 nm, ensuring high sensitivity and accuracy. The sensor offers multiple response times, including 23 µs (S-HSPD), 50 µs (HSPD), 250 µs (FINE), 500 µs (TURBO), 1 ms (SUPER), 4 ms (ULTRA), 16 ms (MEGA), and 64 ms (TERA), catering to diverse operational requirements. Designed for durability, the FS-N40 withstands ambient temperatures ranging from -20°C to +55°C and is constructed with a polycarbonate case, providing robust protection in demanding environments. Its compact design, weighing approximately 23 grams, allows for flexible installation in space-constrained areas. The sensor operates on a power supply voltage of 10 to 30 VDC, with a power consumption of 870 mW or less during normal operation, making it energy-efficient for continuous use. The FS-N40 is ideal for applications requiring high-speed detection and reliable performance, such as automated manufacturing processes, quality control systems, and material handling operations.