| PartNumber | E3Z-LR81 2M | E3Z-LR66 | E3Z-LR61 2M |
| Description | Photoelectric Sensors Retro 15M Prewire 2M LaserType | Photoelectric Sensors LaserType Retro 15M M8-4pinNPN | Photoelectric Sensors Retro 15M Prewire 2M LaserType |
| Manufacturer | Omron | Omron | Omron |
| Product Category | Photoelectric Sensors | Photoelectric Sensors | Photoelectric Sensors |
| RoHS | Y | Y | Y |
| Packaging | Bulk | - | Bulk |
| Series | E3Z | E3Z | E3Z |
| Brand | Omron Automation and Safety | Omron Automation and Safety | Omron Automation and Safety |
| Product Type | Photoelectric Sensors | Photoelectric Sensors | Photoelectric Sensors |
| Factory Pack Quantity | 1 | 1 | 1 |
| Subcategory | Sensors | Sensors | Sensors |
| Part # Aliases | E3ZLR812M | E3ZLR66 | E3ZLR612M |
| Unit Weight | 2.292808 oz | 0.705479 oz | 2.292808 oz |