The Omron E3JM-R4M4T-G is a polarized retroreflective photoelectric sensor from the E3JM series, with a 4 m sensing distance. It uses a red LED light source and outputs via a relay.
The polarized retroreflective sensing method ignores shiny targets that fool standard retroreflective sensors. The 4 m range covers most conveyor lanes and pallet detection.
Supply voltage flexibility
Operating supply voltage spans 12 V to 240 V, covering both AC and DC. That means it drops into panels running 24 VDC control circuits or 120/240 VAC line voltage without a separate power supply. On a service van, you carry one sensor that fits any voltage you find on site — no guessing which tap to grab.
Temperature tolerance
Rated for -25 °C to +55 °C operating ambient. If your application sees sustained heat above 55 °C, you'll need a different sensor family.