Rockwell Automation 42JT-B2LAT1-F4 Sensor,Photoelectric, 42JT, Background Suppression, Visible Red LED, Teachable Light Operate - Dark Operate, Autodetect PNP or NPN Output, Push Button and Remote Teach Sensitivity, 180 mm Sensing Range, 4 pin DC Micro (M12) QD on Pigtail