Through-beam photoelectric sensor
The E3Z-T81-D-M1J-0.3M is a through-beam photoelectric sensor with a 15 m sensing range. The 0.3 M suffix in the part number indicates a 0.3 metre cable length.
Mounting & wiring notes
The 0.3 M cable keeps the sensor close to the controller; plan for a short cable run that may limit remote mounting.