Omron E3FB-RP11 2M Photoelectric Sensor
Omron E3FB-RP11 2M is a PNP retro-reflective photoelectric sensor designed for sensing from 0.1 to 4 m using a red LED and reflector-based optical path. The sensor operates from 10 to 30 VDC and includes a pre-wired 2 m cable for direct machine connection. Light-ON or Dark-ON operation can be selected according to the required switching logic, while the specified response time is 0.5 ms. Its M18 metal body supports cylindrical threaded mounting. Within the E3FB Series, the E3FB-RP11 2M provides the PNP pre-wired format. Long-distance reflector applications can explore 4 m retro-reflective photoelectric sensors available across Omron Sensors.

| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3FB-RP11 2M |
Omron E3FB-RP11 2M Photoelectric Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | Retro-reflective |
| Sensing Distance | 0.1 to 4 m |
| Light Source | Red LED |
| Power Supply Voltage | 10 to 30 VDC |
| Output Configuration | PNP |
| Connection Method | Pre Wired Cable, 2M Length |
| Current Consumption | 25 mA max. |
| Operation Mode | Light-ON/Dark-ON |
| Response Time | 0.5 ms |
| Degree Of Protection | IP67/IP69K |
| Material | Brass, nickel plated |
| Features | M.S.R. |
The Omron E3FB-RP11 2M Photoelectric Sensor provides retro-reflective sensing from 0.1 to 4 m using a red LED and reflector-based optical path. The PNP output transfers the switching state to compatible PLC inputs, while operation from 10 to 30 VDC supports common industrial DC control systems. A pre-wired 2 m cable provides direct electrical connection. Current consumption is specified at 25 mA max., and Light-ON or Dark-ON operation can be selected according to the required machine sequence. Response time is 0.5 ms. The M18 cylindrical housing uses nickel-plated brass and carries IP67 and IP69K protection. Its MSR function supports reflector-based applications where stable optical separation is important.
For an Omron PNP retro-reflective sensor requiring 0.1 to 4 m sensing, fixed cable wiring, and an M18 metal body, the relevant model is the E3FB-RP11. The pre-wired format keeps the electrical connection fixed at the sensing position, while selectable output logic supports different PLC input sequences. Its configuration also matches searches for an Omron 4 m photoelectric sensor and Omron pre-wired retro-reflective sensor. For the corresponding PNP E3FB model using the same 0.1 to 4 m sensing range with an M12 connector instead of a fixed cable, see E3FB-RP21.


