The fiber optic units are available in 9 head types (thread, cylindrical, flat, L-shaped, plastic, perpendicular, stainless steel, U-shaped, area detection), and 7 cable types (standard, flexible, break-resistant, heat-resistant, vacuum-resistant, fully waterproof . The fiber optic units are available in 9 head types (thread, cylindrical, flat, L-shaped, plastic, perpendicular, stainless steel, U-shaped, area detection), and 7 cable types (standard, flexible, break-resistant, heat-resistant, vacuum-resistant, fully waterproof . The fiber optic units are available in 9 head types (thread, cylindrical, flat, L-shaped, plastic, perpendicular, stainless steel, U-shaped, area detection), and 7 cable types (standard, flexible, break-resistant, heat-resistant, vacuum-resistant, fully waterproof, built-in lens) for flexible. This is a series of fiber optic sensor heads designed to be connected to a fiber optic sensor amplifier. The FU Series offers a wide variety of options including thrubeam, reflective, retro-reflective and definite reflective sensing heads. The stainless steel. Balluff's fiber optic sensors are used when a conventional optical sensor is too large or too inflexible for the application: For example, for small part detection, checking part features, part positioning, counting tasks and in robotics. A complete sensor consists of a base unit and a plastic or. Max. 5/1mm Reflective fiber optic probe is designed for use with all fiber optic amplifiers and supports M3, M4, and M6 thread sizes.