Omron E3Z-T81K 5M Photoelectric Sensor
Omron E3Z-T81K 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 switching state to change when a target interrupts the beam. The PNP output communicates this state to compatible PLC and machine-control circuitry, while 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 electrical connection. Response time is specified at 1 ms maximum. No additional characteristic is inferred from the K suffix beyond the supplied specifications. The E3Z-T81K 5M provides longer wiring within the 15 m PNP through-beam sensor range across Omron Sensing Range.
| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3Z-T81K 5M |
Omron E3Z-T81K 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-T81K 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 PLC and machine-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 machine sequence, while response time is specified at 1 ms maximum. PBT is listed for the case and denatured polyarylate for the optical material. No additional technical characteristic is inferred from the K suffix beyond the supplied specifications.
For an Omron PNP through-beam sensor requiring 15 m sensing and a longer pre-wired connection, the relevant model is the E3Z-T81K. Its 12 to 24 VDC operating range supports connection with compatible control equipment, while the selectable switching modes allow the output behavior to match different control requirements. The 1 ms response supports quick state changes when the optical path is interrupted. The 5 m cable provides additional wiring length between the sensing location and control system. The supplied data does not list separate emitter and receiver model numbers for this version, so these are not inferred. For a related E3Z-T81K model with 2 m cables and specified emitter and receiver units, see E3Z-T81K 2M.
