The Omron E3FA-TN21-D is a thru-beam photoelectric sensor with a red LED light source and a maximum sensing distance of 20 meters. It features an NPN open collector output and can operate at supply voltages up to 30VDC. The sensor is rated for temperatures between -25°C and 55°C and has a shock rating of 50. It is a 4-pin device.
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Omron E3FA-TN21-D technical specifications.
| Type | Thru-beam |
| Light Source | Red LED |
| Maximum Sensing Distance | 20m |
| Output Type | NPN Open Collector |
| Shock Rating | 50G |
| Switching Mode | Light ON/Dark ON |
| Max Operating Supply Voltage | 30VDC |
| Min Operating Temperature | -25°C |
| Max Operating Temperature | 55°C |
| Pin Count | 4 |
| RoHS | Yes |
| RoHS Version | 2011/65/EU, 2015/863 |
