OMRON E3Z-L81-2M — Diffuse-Reflective Sensors
Omron E3Z-L81-2M: Diffuse-reflective photoelectric sensor, 120 mm, IP67.

Status: In production
Brand: Omron
Product: Diffuse-reflective photoelectric sensor
Sensing range: 120 mm
Output: PNP
Response time: 1 ms
Protection: IP67
E3Z-L81-2M is the narrow-beam, limited-range diffuse-reflective model of Omron’s E3Z series; with a 2.5 mm spot it detects small objects within a set distance band (60–120 mm). Sensing range: 120 mm. Emitting element: polarity free red light.
Output: PNP; Dark-ON, Light-ON. Response time: 1 ms. Supply: 12–24 V DC. Degree of protection IP67. Connection: cable.
Omron E3Z-L81-2M technical specifications
| E3Z-L81-2M | |
|---|---|
| General | |
| Shape | Cuboid |
| Sensing method | Diffuse reflective |
| Feature | Narrow beam |
| Sensing | |
| Sensing distance | 120 mm |
| Sensing distance (min.) | 60 mm |
| Setting method | Manual adjustment |
| Type of light | Polarity free red light |
| Spot size | 2.5 mm |
| Electrical characteristics | |
| Power supply voltage | 12–24 V DC |
| Output and indicators | |
| Output type | PNP |
| Operation mode | Dark-ON, Light-ON |
| Response time | 1 ms |
| Environmental | |
| Degree of protection | IP67 |
| Mechanical and connection | |
| Connection method | Cable |
| Cable length | 2 m |
| Housing material | PBT |
| Dimensions | 10.8 × 31 × 20 mm (W × H × D) |
Key features
- 120 mm
- PNP
- 1 ms
- IP67
E3Z-L81-2M ordering codes
| Part number | Description |
|---|---|
| E3Z-D81-2M | Diffuse, 100 mm, PNP, 2 m cable |
| E3Z-D82-2M | Diffuse, 1 m, PNP, 2 m cable |
| E3Z-D82-IL3-2M | Diffuse, 1 m, PNP + IO-Link, 2 m cable |
| E3Z-L81-2M | Narrow beam, 60–120 mm, PNP, 2 m cable |
E3Z-L81-2M accessories
Accessories listed by the manufacturer for this model (ordered separately):
| Part number | Description |
|---|---|
| E39-L104 | Mounting bracket, standard, vertical mounting |
| E39-L142 | Mounting bracket, protective side wall |
| E39-L144 | Protective mounting bracket (for pre-wired E3Z) |
| E39-L150 | Mounting bracket, 100 mm high post |
| E39-L151 | Mounting bracket, 200 mm high post |
| E39-L153 | L-shaped mounting bracket (for pre-wired type) |
| E39-L43 | Mounting bracket, side mounting |
| E39-L44 | Mounting bracket, rear mounting |
| E39-L98 | Protective metal cover (E3S-A / E3Z vertical sensor) |
Other Omron Diffuse-Reflective Sensors
- OMRON E3Z-D81-2M — Diffuse-reflective photoelectric sensor
- OMRON E3Z-D82-2M — Diffuse-reflective photoelectric sensor
- OMRON E3Z-D82-IL3-2M — Diffuse-reflective photoelectric sensor
Models from other brands: Diffuse-Reflective Sensors
Is this sensor right for your application?
Share the object colour/surface, distance, background and your PLC input (NPN/PNP, IO-Link); let’s select the right diffuse-reflective sensor together.
All product specifications are subject to change without notice. Data compiled from the specification and accessory lists on Omron Industrial Automation Europe’s industrial.omron.eu product pages: E3Z-L81-2M. The image shows the series.
