Omron E3Z-LS81 5M Photoelectric Sensor
Omron E3Z-LS81 5M is a distance-setting photoelectric sensor designed for object sensing across a specified 20 to 200 mm range. Its 670 nm red LED provides the optical source, while the PNP output communicates the switching state to compatible machine-control circuitry. Selectable Light-ON and Dark-ON operation supports different control requirements. The sensor operates from 12 to 24 VDC and includes a 5 m pre-wired cable for extended wiring between the sensing point and control equipment. Current consumption is specified at 30 mA maximum, while response time is 1 ms maximum. Within the E3Z Series, the E3Z-LS81 5M provides longer fixed wiring within the 200 mm PNP sensor range across Omron Sensor Range.

| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3Z-LS81 5M |
Omron E3Z-LS81 5M Photoelectric Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | Distance-setting |
| Shape | Square type |
| Sensing Distance | 20 to 200 mm |
| 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-LS81 5M Photoelectric Sensor uses distance-setting sensing across a specified 20 to 200 mm range with PNP output. Its 670 nm red LED provides the optical source, while the output sends the switching state to compatible industrial control circuitry. The sensor operates from 12 to 24 VDC and consumes up to 30 mA. Selectable Light-ON and Dark-ON operation allows the switching behavior to match the required control logic, while response time is specified at 1 ms maximum. A 5 m pre-wired cable provides extended fixed wiring between the sensing position and associated control equipment. PBT and denatured polyarylate are listed among the supplied materials. The longer cable distinguishes this listing from shorter E3Z-LS81 wiring configurations.
For an Omron PNP distance-setting sensor requiring a 200 mm maximum range and 5 m pre-wired connection, the relevant model is the E3Z-LS81. The 12 to 24 VDC supply and selectable Light-ON or Dark-ON switching support integration with compatible machine-control circuitry. Its 30 mA maximum current consumption and 1 ms response time define the supplied electrical switching characteristics. The model therefore suits requirements for an Omron 200 mm PNP sensor, Omron pre-wired photoelectric sensor, and long-cable distance-setting sensor. For another E3Z-LS81 configuration using a 2 m cable with a background-suppression arrangement, see E3Z-LS81 2M.


