Autonics BR400-DDT is an M18 cylindrical photoelectric sensor providing 400 mm diffuse reflective detection with infrared led, 850 nm. It operates on 12-24 VDC and offers npn switching with Light/Dark ON selection.
Features
- High-speed response under 1 ms with digital signal processing
- Sensitivity adjuster for quick threshold tuning
- Reverse polarity and output short-circuit/overcurrent protection
- Light/Dark ON selectable via control wire
- Glass lens and robust metal housing (BR series)
- IP66 protection for industrial environments
Technical specifications
| Model | BR400-DDT |
| Series | BR |
| Body size | M18 cylindrical |
| Sensing type | Diffuse reflective |
| Sensing distance | 400 mm |
| Light source / wavelength | Infrared LED, 850 nm |
| Response time | <= 1 ms |
| Operation mode | Light ON / Dark ON (control wire selectable) |
| Sensitivity adjustment | Front adjuster |
| Supply voltage | 12-24 VDC +/-10% (ripple P-P <= 10%) |
| Control output | NPN open collector |
| Protection circuits | Reverse polarity, output short, overcurrent |
| Protection rating | IP66 |
| Connection | Cable (except -C connector types) |
For more information, visit the OEM model page for BR400-DDT.




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