Omron E3Z-T81A 5M Photoelectric Sensor
Omron E3Z-T81A 5M is a through-beam photoelectric sensor designed for object sensing across a specified distance of 15 m. Its 870 nm infrared LED establishes the optical path between the transmitting and receiving sides, allowing the sensing state to change when a target interrupts the beam. The PNP output communicates the switching state to compatible machine-control circuitry, while selectable Light-ON and Dark-ON operation supports different switching requirements. The sensor operates from 12 to 24 VDC and includes a 5 m pre-wired cable for extended wiring. Response time is specified at 1 ms maximum. The supplied data does not state separate emitter and receiver model numbers for this listing. The E3Z-T81A 5M provides longer fixed wiring within the 15 m PNP through-beam sensor range across Omron Sensing Products.
| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3Z-T81A 5M |
Omron E3Z-T81A 5M Photoelectric Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | Through-beam |
| Shape | Square |
| Sensing Distance | 15 m |
| Power Supply Voltage | 12 to 24 VDC |
| Output Configuration | PNP |
| Connection Method | Pre Wired Cable, 5m Length |
| Current Consumption | 26.4 VDC 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-T81A 5M Photoelectric Sensor uses through-beam sensing across a specified distance of 15 m. An 870 nm infrared LED establishes the optical path between the transmitting and receiving sides, allowing the switching state to change when a target interrupts the beam. The PNP output communicates the resulting state to compatible industrial control circuitry. The sensor operates from 12 to 24 VDC and includes a 5 m pre-wired cable for extended electrical connection. Light-ON or Dark-ON operation can be selected according to the required switching sequence, while response time is specified at 1 ms maximum. PBT is listed for the case and denatured polyarylate for the optical material. The supplied specifications do not provide separate emitter and receiver model numbers for this listing, so none are added.
For an Omron PNP through-beam sensor requiring a 15 m sensing distance and longer pre-wired connection, the relevant model is the E3Z-T81A. The 12 to 24 VDC supply range supports integration with compatible machine-control circuitry, while selectable switching logic allows the output behavior to suit the required sequence. The 1 ms response supports rapid state changes when the optical path is interrupted. The 5 m cable provides additional wiring length where the control connection is positioned farther from the sensing location. The supplied specifications for this listing differ from the 2 m E3Z-T81A version and are retained as provided. For that related 2 m version, see E3Z-T81A 2M.
