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| PartNumber | E3S-R2B42 2M | E3S-R2B4 | E3S-R2B41 |
| Description | Photoelectric Sensors PHOTO RETRO | Photoelectric Sensors Light ON/Dark ON PNP 200cm 12-24V 3-Pin | Optical Sensors Photoelectric Sensors Photoelectric Senso |
| Manufacturer | Omron | Omron | Omron Automation and Safety |
| Product Category | Photoelectric Sensors | Photoelectric Sensors | Optical Sensors - Photoelectric, Industrial |
| RoHS | Y | Y | - |
| Series | E3S | E3S | E3S-R |
| Brand | Omron Automation and Safety | Omron Automation and Safety | - |
| Product Type | Photoelectric Sensors | Photoelectric Sensors | - |
| Factory Pack Quantity | 1 | 1 | - |
| Subcategory | Sensors | Sensors | - |
| Part # Aliases | E3SR2B422M | E3SR2B4 | - |
| Sensing Method | - | Retroreflective | Retroreflective |
| Sensing Distance | - | 2 m | 3.937" ~ 78.740" (100mm ~ 2m) ADJ |
| Light Source | - | Infrared LED | Infrared |
| Connection Method | - | Prewired Cable | Cable |
| Output Configuration | - | PNP | PNP - Dark-ON/Light-ON - Selectable |
| Minimum Operating Temperature | - | - 25 C | - |
| Maximum Operating Temperature | - | + 55 C | - |
| Operating Supply Voltage | - | 24 V | - |
| Operating Temperature | - | - | -25°C ~ 55°C |
| Ingress Protection | - | - | NEMA 1, 3, 4X, 6, 12; IEC 144 IP67 |
| Voltage Supply | - | - | 12 V ~ 24 V |
| Adjustment Type | - | - | Adjustable |
| Response Time | - | - | 1ms |
| Cable Length | - | - | * |