Omron E3RB-DN12 2M Photoelectric Sensor
Omron E3RB-DN12 2M is an NPN diffuse-reflective photoelectric sensor designed for direct object sensing across a distance of up to 300 mm. Its red LED sends light toward the target, while returned light provides the sensing information without requiring a separate reflector. The sensor operates from 10 to 30 VDC and uses an NPN output for compatible PLC inputs and machine-control circuits. A 2 m pre-wired cable provides direct electrical connection, while selectable Light-ON or Dark-ON operation supports different switching requirements. Its cylindrical radial M18 metal body provides a threaded mounting format. Within the E3RB Series, the E3RB-DN12 2M provides the pre-wired NPN option. Related 300 mm diffuse sensors are available across Omron Industrial Sensors.
| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3RB-DN12 2M |
Omron E3RB-DN12 2M Photoelectric Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | Diffuse-reflective |
| Shape | Cylindrical radial |
| Sensing Distance | 300 mm |
| Power Supply Voltage | 10 to 30 VDC |
| Output Configuration | NPN |
| Connection Method | Pre Wired Cable,2M Length |
| Light Source (Wavelength) | Red LED |
| Thread Size | M18 |
| Length | 57 mm |
| Operation Mode | Light-ON/Dark-ON |
| Response Time | 0.5ms |
| Degree Of Protection | IP67/IP69K |
| Material Housing | Brass, nickel plated |
The Omron E3RB-DN12 2M Photoelectric Sensor uses diffuse-reflective sensing in a cylindrical radial format for direct object sensing across a distance of up to 300 mm. Its red LED sends light toward the target, while returned light supplies the sensing information without requiring a separate reflector. The sensor operates from 10 to 30 VDC and provides an NPN output for compatible PLC inputs and machine-control circuits. A 2 m pre-wired cable provides fixed electrical connection, while current consumption is specified at 25 mA maximum. Light-ON or Dark-ON operation can be selected according to the required machine logic, and response time is specified at 0.5 ms. The M18 body measures approximately 57 mm in length and uses nickel-plated brass for the housing.
For an Omron NPN diffuse reflective photoelectric sensor requiring a 300 mm sensing range and pre-wired connection, the relevant model is the E3RB-DN12. Its radial optical arrangement provides side-facing sensing from the cylindrical body, which can suit threaded mounting positions where axial sensing is not preferred. The listed IP67 and IP69K ratings support use where dust, water, or washdown exposure may occur. The specification also aligns with searches for an Omron 300 mm NPN sensor and Omron M18 metal photoelectric sensor. For the corresponding 300 mm NPN E3RB configuration using an M12 connector instead of the fixed 2 m cable, see E3RB-DN22.
