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Omron E3RA-DN21 technical specifications.
| Pin Count | 4 |
| PCB | 4 |
| Package Length (mm) | 57.9 |
| Mounting | Panel |
| Type | Diffuse-Reflective |
| Light Source | Red LED |
| Maximum Sensing Distance | 0.1m |
| Output Type | NPN |
| Switching Mode | Light ON/Dark ON |
| Max Operating Supply Voltage | 30VDC |
| Min Operating Temperature | -25°C |
| Max Operating Temperature | 55°C |
| Cage Code | SDM04 |
| EU RoHS | Yes |
| HTS Code | 8536509065 |
| Automotive | No |
| AEC Qualified | No |
| PPAP | No |
| RoHS Versions | 2011/65/EU, 2015/863 |
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