Omron E3JM-R4M4-G Relay Output Photoelectric Sensor
The E3JM-R4M4-G is a Relay Output Photoelectric Sensor designed for reliable object detection in industrial automation environments. Using a retro-reflective sensing method with MSR function, this sensor provides a stable 4 m sensing distance when paired with the supplied reflector. It operates on a wide 12 to 240 V AC/DC power supply and supports both Light-ON and Dark-ON operation modes for flexible control logic. With a durable ABS housing, terminal block connection, and IP66 protection, the sensor is built for demanding industrial conditions. Manufactured by Omron, the E3JM-R4M4-G belongs to the Omron Photoelectric Sensors, known for multi-voltage capability and robust optical performance.
| Brand | Omron |
| Product | Photoelectric Sensor |
| Model Number | E3JM-R4M4-G |
Omron E3JM-R4M4-G Retro-Reflective Sensor â Technical Overview
| Specification | Value |
|---|---|
| Sensing Method | Retro-reflective |
| Sensing Distance | 4 m (with E39-R1 reflector) |
| Output | Relay |
| Connection Method | Terminal block |
| Operation Mode | Light-ON / Dark-ON selectable |
| Light Source | Red LED |
| Response Time | 30 ms max. |
| Power Supply | 12â240 VDC / 24â240 VAC |
| Degree of Protection | IP66 |
| Material | ABS |
| Features | With M.S.R. |
The E3JM-R4M4-G is widely recognized as an Omron relay output photoelectric sensor designed for consistent and accurate detection in industrial automation systems. Featuring a retro-reflective polarized red light sensing principle and a 30 ms response time, the sensor delivers stable switching performance in standard-speed applications while minimizing false detection caused by reflective backgrounds.
In industrial applications, the E3JM-R4M4-G photoelectric sensor is commonly used in conveyor systems, packaging machines, material handling lines, and general automation panels. Its relay output configuration allows direct interfacing with AC and DC control circuits, while the terminal block wiring ensures secure installation in electrical enclosures.
Engineered for long-term reliability, the sensor supports multi-voltage operation and includes built-in timer functions such as ON-delay, OFF-delay, and one-shot delay. With strong insulation characteristics, IP66 enclosure protection, and resistance to vibration and shock, the E3JM-R4M4-G is suited for continuous operation in demanding industrial environments requiring dependable retro-reflective sensing.