- Diffuse and through-beam sensors
- Diffuse sensors
- Diffuse sensor with background suppression
- Retroreflective sensors
- Fork sensors
- Angle sensors
- Optical windows
- Light grids
- Light bands
- Color sensors
- Contrast sensors
- Luminescence sensors
- Fiber-based devices for plastic and glass fibers
- Plastic and glass fibers for fiber-based devices
- Micromote - optical sensor heads
- Micromote - Amplifier for optical sensor heads
- Photoelectric distance sensors
Through-beam sensors
Photoelectric sensors

Available in:
155 versions
Through-beam sensors from Balluff serve to detect objects reliably, regardless of surface, color, material - even with a heavy gloss finish. They consist of separate transmitter and receiver units that are attuned to each other. When an object interrupts the light beam, this causes a change in the output signal in the receiver. Absolute reliability.
Features
- Ideal for positioning tasks thanks to excellent reproducibility
- Extremely resistant to contamination and has a large functional reserve
- Ideally suited for large operating ranges
- Transmitter and receiver in separate housings
Availability
155 Results
Order code | Price | Principle of optical operation | Dimension | Interface | Range | Light type | Connection | Light type | Actions |
---|---|---|---|---|---|---|---|---|---|
![]() BOS027PBOS 21M-XI-RS31-S4 |
121.90 EUR | Through-beam sensor (Emitter) | 15.4 x 51.1 x 42.7 mm | IO-Link 1.1 | 0...20 m | LED, red light | Connector, M12x1-Male, 4-pin | LED, red light | |
![]() BOS027RBOS 21M-PAI-RE30-S4 |
147.40 EUR | Through-beam sensor (receiver) | 15.4 x 51.1 x 42.7 mm | IO-Link 1.1 Normally open (NO) Normally closed (NC) | 0...20 m | Red light | Connector, M12x1-Male, 4-pin | Red light | |
![]() BOS01U8BOS 08E-X-LS20-S49 |
118.60 EUR | Through-beam sensor (Emitter) | Ø 8 x 40 mm | 0...3 m | Laser red light | Connector, M8x1-Male, 3-pin | Laser red light | ||
![]() BOS00WNBOS 12M-XT-LS12-S4 |
106.90 EUR | Through-beam sensor (Emitter) | Ø 12 x 70 mm | 0...30 m | Laser red light | Connector, M12x1-Male, 4-pin | Laser red light | ||
![]() BOS01JPBOS 5K-PU-LX10-S75 |
130.70 EUR | Through-beam sensor | 10.8 x 43.5 x 19.5 mm | PNP normally open/normally closed (NO/NC) | 0...30 m | Laser red light | Connector, M8x1-Male, 4-pin | Laser red light | |
![]() BOS01U3BOS 08E-PS-LE20-S49 |
98.60 EUR | Through-beam sensor (receiver) | Ø 8 x 40 mm | PNP normally open (NO) | 0...3 m | Laser red light | Connector, M8x1-Male, 3-pin | Laser red light | |
![]() BOS00WFBOS 12M-PA-LE10-S4 |
84.10 EUR | Through-beam sensor (receiver) | Ø 12 x 70 mm | PNP NO PNP NC | 0...30 m | Laser red light | Connector, M12x1-Male, 4-pin | Laser red light | |
![]() BOS01FPBOS 23K-PA-RE10-S4 |
85.30 EUR | Through-beam sensor (receiver) | 23 x 51 x 52.4 mm |
PNP normally open (NO) PNP normally closed (NC) |
0...25 m | LED, red light | Connector, M12x1-Male, 4-pin | LED, red light | |
![]() BOS016EBOS 23K-XT-RS11-S4 |
68.60 EUR | Through-beam sensor (Emitter) | 23 x 51 x 52.4 mm | 0...25 m | LED, red light | Connector, M12x1-Male, 4-pin | LED, red light | ||
![]() BOS01CKBOS 50K-PA-RE10-S4 |
125.20 EUR | Through-beam sensor (receiver) | 28.5 x 80.5 x 62 mm | PNP NO PNP NC | 0...60 m | LED, red light | Connector, M12x1-Male, 4-pin | LED, red light |