The E3JMR4M4G: The Omron E3JM-R4M4-G is a retro-reflective photoelectric sensor with a built-in M.S.R. (Mutual Interference Reduction) function, meaning it rejects crosstalk from adjacent sensors on the same line — useful on conveyor belts or multi-lane detection where units are mounted close together. The relay output switches 0 to 3 A loads directly, so you can drive a contactor or PLC input without an interposing relay. Sensing distance is 0 to 4 m when paired with the E39-R1 reflector, and the standard sensing object is an opaque 75 mm diameter target. The red LED source (660 nm) is visible during alignment, which saves time on the ladder.
Supply and output
Power supply is 24 to 240 VAC, -10% to +10%, so it runs on common plant voltages without a separate DC supply. Operation mode is Light-ON only — the output energises when the beam is made.