Omron E3Z-D81 5M Photoelectric Sensor
Omron E3Z-D81 5M is a diffuse-reflective photoelectric sensor specified for direct object sensing across a 1 m distance. An 870 nm infrared LED provides the optical source, while the sensor evaluates light returned directly from the target without requiring a separate reflector. The supplied configuration uses NPN output with selectable Light-ON or Dark-ON operation. Operating voltage is 12 to 24 VDC, and the sensor includes a 5 m pre-wired cable for extended wiring. Current consumption is specified at 30 mA maximum, while response time is 1 ms maximum. Within the E3Z Series, the E3Z-D81 5M provides longer fixed wiring for 1 m diffuse photoelectric sensors across Omron Industrial Sensors.
| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3Z-D81 5M |
Omron E3Z-D81 5M Photoelectric Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | Diffuse-reflective |
| Shape | Square |
| Sensing Distance | 1m |
| Power Supply Voltage | 12 to 24 VDC |
| Output Configuration | NPN |
| Connection Method | Pre Wired Cable, 5M Length |
| Current Consumption | 30 mA max. |
| Light Source (Wavelength) | Infrared LED (870 nm) |
| Operation Mode | Light-ON/Dark-ON selectable |
| Response Time | 1 ms max. |
| Degree Of Protection | IEC: IP67 |
| Material | Polybutylene terephthalate (PBT) |
| Material Lens | Denatured Polyarylate |
| Features | Transparent detection |
| Weight | 65g |
The Omron E3Z-D81 5M Photoelectric Sensor uses diffuse-reflective sensing across a specified 1 m working distance. Its 870 nm infrared LED directs light toward the target, allowing the sensor to evaluate the returned optical signal without requiring a separate reflector. The supplied configuration uses NPN output with selectable Light-ON and Dark-ON switching. The sensor operates from 12 to 24 VDC and includes a 5 m pre-wired cable for installations requiring additional routing length. Current consumption is specified at 30 mA maximum, while response time is 1 ms maximum. PBT and denatured polyarylate are listed as construction materials, and the supplied specification states IP67 enclosure protection for this configuration.
For an Omron long-range diffuse sensor requiring NPN output and extended fixed wiring, the applicable model is the E3Z-D81. Direct target-return sensing supports object presence monitoring without a separate reflector, while the 1 m working distance provides more reach than short-range diffuse versions. The selectable switching behavior supports different machine sequences, and the 12 to 24 VDC supply range suits common industrial controls. Its specification also matches searches for an Omron 5 m cable sensor and Omron 1 m NPN photoelectric sensor. The extended cable provides additional routing flexibility between the sensing location and associated control wiring. For the same supplied 1 m NPN configuration with a shorter 0.5 m cable, see the E3Z-D81 0.5M.
