Omron E3JM-R4M4-G Relay Output Photoelectric Sensor
The Omron E3JM-R4M4-G is a relay output photoelectric sensor designed for reliable object detection in industrial automation environments. As a member of the E3JM Photoelectric Series, it uses a retro-reflective sensing method with MSR function and provides a 4 m sensing distance when paired with the supplied reflector. It operates on a 12 to 240 V AC/DC power supply and supports Light-ON and Dark-ON operation modes. An ABS housing, terminal block connection, and IP66 protection support demanding industrial conditions. The E3JM-R4M4-G is suited to Retro-reflective Sensing Applications. Related products can be explored through Omron Automation Products.
| 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.