| Item | Specification |
| Model | CJ1W-CTL41-E |
| I/O system | CJ I/O Bus |
| Expansion unit type | Special I/O Unit |
| Type of module | Encoder input |
| Digital input type | Incremental encoder, Line driver (RS-422), Open collector |
| Digital output type | None |
| Number of encoder input channels | 4 |
| Max. encoder input frequency | 100 kHz |
| Number of pulse output channels | 0 |
| Max. pulse output frequency | 0 kHz |
| I/O connection type | MIL (plug not included) |
| Number of I/O connectors | 1 |
| Detachable I/O connector | |
| Suitable for safety functions | |
| Communication port(s) | None |
| Product Height (unpacked) | 95.4 mm |
| Product Width (unpacked) | 31 mm |
| Product Depth (unpacked) | 83.6 mm |
| Product Weight (unpacked) | 160 g |
