The TLµ contrast sensor series offers solutions for all detection applications of register marks and other neutral or colored references. The microprocessor-based setting can be either 'Teach-in' using two push-buttons or 'Remote' by cable. The LED emission can be red/green with automatic selection or white offering the possibility of operating on all contrasts. Models with interchangeable 9 or 18 mm lenses are available. Whereas 22, 28 and 50 mm lenses are supplied as accessories. Many different fiber optic models are available. The output is NPN or PNP according to the model, but can always be selected using an internal switch. An analog output proportional to the received light is also present.