42EF-R2KBBT-F4 - PHOTOSWITCH Photoelectric Sensor, RightSight, Transmitted Beam Receiver, Red, DC - Dark Operate, Both Sink (NPN) and Source (PNP), 4-pin DC Micro QD on 152mm (6in) pigtail, IO-Link Enabled

42EF-R2KBBT-F4 - PHOTOSWITCH Photoelectric Sensor, RightSight, Transmitted Beam Receiver, Red, DC - Dark Operate, Both Sink (NPN) and Source (PNP), 4-pin DC Micro QD on 152mm (6in) pigtail, IO-Link Enabled