Opto-sensor, one-way light barrier (receiver), operating voltage 10.30 VDC, max. range 30000 mm, cable length 2 m, cable, PVC, 2 m, protection class IP67, sensitivity adjustable via potentiometer, adjustment display, short response time of 0.3 ms, associated transmitter SM31ELMHS, light/dark switching, sensitivity adjustable via potentiometer, adjustment display