Omron E3Z-L81 5M Photoelectric Sensor
Omron E3Z-L81 5M is a diffuse-reflective photoelectric sensor designed for direct target sensing across a specified 20 to 300 mm range. A 670 nm red LED provides the optical source, while returned light from the target establishes the sensing state without requiring a separate reflector. The PNP output transfers this state to compatible machine-control circuitry, and selectable Light-ON and Dark-ON operation supports different switching requirements. 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-L81 5M provides longer wiring for PNP diffuse photoelectric sensors across Omron Sensing Products.
| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3Z-L81 5M |
Omron E3Z-L81 5M Photoelectric Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | Diffuse-reflective |
| Shape | Square type |
| Sensing Distance | 20 to 300mm |
| Power Supply Voltage | 12 to 24 VDC |
| Output Configuration | PNP |
| Connection Method | Pre Wired Cable, 5m Length |
| Current Consumption | 30 mA max. |
| Light Source (Wavelength) | Red LED (670 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-L81 5M Photoelectric Sensor uses diffuse-reflective sensing across a specified 20 to 300 mm range. Its 670 nm red LED directs light toward the target, while the returned optical signal establishes the switching state without requiring a separate reflector. The PNP output communicates this state to compatible industrial control circuitry, and selectable Light-ON and Dark-ON operation supports different machine requirements. The sensor operates from 12 to 24 VDC and includes a 5 m pre-wired cable for extended connection length. Current consumption is specified at 30 mA maximum, while response time is 1 ms maximum. PBT and denatured polyarylate are listed as materials for the square sensor housing.
For an Omron PNP diffuse sensor requiring a 20 to 300 mm working range and longer fixed wiring, the applicable model is the E3Z-L81. Direct target-return sensing avoids the need for a separate reflector, while selectable switching behavior supports different control sequences. The 12 to 24 VDC supply range suits common industrial control systems, and the supplied specification states IP67 enclosure protection. This model also aligns with searches for an Omron 300 mm PNP photoelectric sensor and Omron 5 m cable sensor. The longer cable provides additional routing distance between the sensing point and associated machine wiring. For the same 20 to 300 mm configuration with a shorter 0.5 m pre-wired cable, see the E3Z-L81 0.5M.
