The tla series manufactures the most reliable and innovative solutions for detection applications of registration marks and other neutral or coloured references. The microprocessor based setting can either be teach in, using 2 push buttons or remote by cable with possibility of rapidly memorising and recalling 4 different formats. The setting can also be completely automatic in the models with auto set function. The led emission of these microprocessor based colour mark sensor series are available in red/green automatic selection or white offering the possibility of operating on all contrasts also amongst same coloured object and background, presenting different surface treatments or workings. Interchangeable lenses and different fibre optic models are available. The npn or pnp output is selectable by an internal switch and an analog output proportional to the received light is also available.