OPTICAL PROXIMITY SWITCH SERIES K21 R DIFFUSE SENSOR, SN=600 MM, PNP, LIGHT-ON/DARK-ON FUNCTION, ADJUSTABLE, SURPLUS LIGHT, M12 CONNECTOR CABLE, 10-30 V DC, IA=100 MA, WITH ADJUSTABLE SENSITIVITY, WITH M18 CASING ENTRY HORIZONTAL AND VERTICAL || 3RG7420