The FT/GT, FD/GD, FL/GL series fiber optic units are available in various sensing methods (through-beam, retroreflective, convergent reflective), 9 head types (thread, cylindrical, flat, L-shaped, plastic, perpendicular, stainless steel, U-shaped, area detection), 5 cable types (standard, flexible, break-resistant, heat-resistant, vacuum-resistant) for flexible installation in diverse environments.