Balluff fiber optic sensors are used when a conventional optosensor is too large or too inflexible for the application. Our fiber optic sensors are combined with either a plastic or fiber optic to form a complete sensor. Their different properties give you maximum flexibility depending on the application. Series=75K, Dimensions=10.4 x 35.4 x 84 mm, Interface=NPN normally open/closed (NO/NC), Functional principle=Fiber optic device, Input function=Same function as buttonKey lock on/off, Setting option=Light/dark switchingFactory setting (reset)Sensitivity (Sn), Operating voltage Ub=10...30 VDC, Light type=LED red light, Connection=Connector, M8x1 connector, 4-pin, Housing material=ABS, Switching frequency=1500 Hz, Approval/Conformity=CEcULusEACWEEE