| PartNumber | E3FB-DN21 | E3FB-DN22 | E3FB-DN23 |
| Description | Photoelectric Sensors BrassM180.1m DiffAxNPNConn | Photoelectric Sensors BrassM180.3m DiffAxNPNConn | Photoelectric Sensors Brass M18 Diff1m AxNPNConn |
| Manufacturer | Omron | Omron | Omron |
| Product Category | Photoelectric Sensors | Photoelectric Sensors | Photoelectric Sensors |
| RoHS | N | N | N |
| Sensing Method | Diffuse Reflective | Diffuse Reflective | Diffuse Reflective |
| Sensing Distance | 100 mm | 300 mm | 1 m |
| Light Source | Red LED | Red LED | Red LED |
| Connection Method | M12 Connector | M12 Connector | M12 Connector |
| Output Configuration | NPN | NPN | NPN |
| Minimum Operating Temperature | - 25 C | - 25 C | - 25 C |
| Maximum Operating Temperature | + 55 C | + 55 C | + 55 C |
| Features | Cylindrical, Straight type, Metal housing | Cylindrical, Straight type, Metal housing | Cylindrical, Straight type, Metal housing |
| Length | 48 mm | 48 mm | 48 mm |
| Series | E3FA/E3RA/E3FB/E3RB | E3FA/E3RA/E3FB/E3RB | E3FA/E3RA/E3FB/E3RB |
| Width | 18.5 mm | 18.5 mm | 18.5 mm |
| Brand | Omron Automation and Safety | Omron Automation and Safety | Omron Automation and Safety |
| Operating Supply Voltage | 30 V | 30 V | 30 V |
| Product Type | Photoelectric Sensors | Photoelectric Sensors | Photoelectric Sensors |
| Factory Pack Quantity | 1 | 1 | 1 |
| Subcategory | Sensors | Sensors | Sensors |
| Part # Aliases | E3FBDN21 | E3FBDN22 | E3FBDN23 |
| Unit Weight | 1.763698 oz | 1.763698 oz | 1.763698 oz |