Omron E3JK-RN11 2M is an NPN retro-reflective photoelectric sensor with a sensing distance of up to 7 m with the E39-R1 reflector, or 11 m with the E39-R2, and a pre-wired 2 m cable. It detects any object that breaks the beam between the sensor and reflector, and its visible red LED makes alignment easy. For detecting shiny objects, see the MSR model E3JK-RN12 2M. It is part of the Omron E3JK Series. Explore more Omron photoelectric sensors.