Opto-sensor, fiber optic sensor for plastic fiber optics, operating voltage 24,250 VAC / 12,250 VDC, connector, 7/8', protection class IP67, sensitivity adjustable via potentiometer, adapter set PFK-B for connecting plastic fiber optics available separately, operating voltage: 12,250 VDC or 24,250 VAC, relay output, normally open (SPST), light or dark switching adjustable via selector switch