| Device type | Fiber-optic amplifier |
| Dimensions (W x H x D) | 10.5 mm x 35.5 mm x 83.7 mm |
| Housing design (light emission) | Rectangular |
| Sensing range max. | 0 mm … 4,000 mm (Through-beam system) 1) |
| Sensing range | 0 mm … 160 mm, Proximity system 2) 3)
0 mm … 700 mm, Through-beam system 4) |
| Focus | Approx. 65° 5) |
| Type of light | Visible red light |
| Light source | LED 6) |
| Angle of dispersion | Approx. 65° 5) |
| Wave length | 660 nm |
| Adjustment | Potentiometer, 10 turns |
| Indication | LED |
| Supply voltage UB | 10 V DC … 30 V DC 1) |
| Ripple | 10 % 2) |
| Current consumption | 30 mA 3) |
| Switching output | PNP |
| Number of switching outputs | 1 |
| Switching mode | Light/dark switching |
| Switching mode selector | Selectable via light/dark selector |
| Response time | ≤ 250 µs 4) |
| Switching frequency | 2,000 Hz 5) |
| Time functions | Off delay |
| Delay time | Selectable by sliding switch, ≤ 40 ms |
| Input | – |
| Connection type | Cable, 3-wire, 2 m 6) |
| Cable material | Plastic, PVC |
| Conductor cross section | 0.2 mm² |
| Cable diameter | Ø 3.8 mm |
| Circuit protection | A 7)
B 8) C 9) D 10) |
| Protection class | III |
| Weight | 70 g |
| Housing material | Plastic, ABS/PC |
| Enclosure rating | IP66 11) |
| Items supplied | BEF-WLL170 mounting bracket |
| Ambient operating temperature | –25 °C … +55 °C |
| Ambient temperature, storage | –40 °C … +70 °C |
| UL File No. | NRKH.E300503 & NRKH7.E300503 |





