The TLU-011 is a Color Mark Contrast Sensor. The TL 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, offering the possibility of operating on all contrasts. Models with interchangeable 9mm lens is available. The output is NPN according to the model, but can always be selected using an internal switch. An analog output proportional to the received light is also present.