Active device adapter with Stainless steel ferrule designed for mating 2. 2 mm jacketed 200/230 µm HCS cable with IFO LEDs and Photodetectors to allow for increased separation distance when compared to unterminated plastic optical fiber. 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. Outdoor exposure under extreme corrosive conditio s. in the chemical or f d industries. Such applications may need to t was made to obtain a signal at 10% of the working range. This is where fiber optic sensors provide an elegant solution.