Contrast sensors are high-resolution light sensors that differentiate objects according to their gray values. The robust contrast sensors from Balluff detect even small contrast differences, have a high switching frequency of up to 30 kHz and are therefore particularly fast. They enable high positioning accuracy and are therefore suitable for a wide range of applications, for example in the printing and packaging industries. Series=6K, Dimensions=12 x 41.5 x 21.6 mm, Interface=NPN normally open/closed (NO/NC), Input function=Key lock on/compensate function as button, Function principle=Contrast button, Optical function principle=Light button, focused, Beam characteristics=focused, Light type=Laser red light, Light spot size=0.7 x 0.7 mm at 250 mm, Range=1...250 mm, Connection=Connector, M8x1 plug, 4-pin, Housing material=ABS, Active surface, Material=PMMA, Operating voltage Ub=10...30 VDC, Approval/Conformity=cULusCEEACWEEE