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Omron E3FA-DN11 2M Photoelectric sensor, Diffuse-reflective, Sensing distance 100mm, Red light, NPN Output, Pre-wired 2m: Amazon.com: Industrial & Scientific
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E3FA-RP21 | 378880 | OMRON PHOTOELECTRIC Sensor, 0.1-4M Range, M18 AXIAL, RED LED, Retro-Reflective, PNP, M12 Connector: Amazon.com: Industrial & Scientific
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