- 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
155 Results
Order code | Price | Principle of optical operation | Dimension | Interface | Range | Light type | Connection | Light type | Actions |
---|---|---|---|---|---|---|---|---|---|
![]() BOS027PBOS 21M-XI-RS31-S4 |
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 | ||
![]() BOS02ANBOS R090K-NU-RX10-S49 |
Through-beam sensor | 10.7 x 43.5 x 19.5 mm | NPN normally open/normally closed (NO/NC) | 0...20 m | LED, red light | Connector, M8x1, 3-pin | LED, red light | ||
![]() BOS02AWBOS R090K-PU-RX10-02 |
Through-beam sensor | 10.7 x 32.7 x 19.5 mm | PNP normally open/normally closed (NO/NC) | 0...20 m | LED, red light | Cable, 2.00 m, PVC | LED, red light | ||
![]() BOS0288BOS R254K-UUI-RE10-S4 |
Through-beam sensor (receiver) | 20.4 x 60.3 x 49.5 mm |
IO-Link 1.1 Analog, current 4…20 mA Pin 4: Push-pull NO/NC Pin 2: PNP/NPN/push-pull NO/NC |
0...20 m | Red light | Connector, M12x1-Male, 4-pin | Red light | ||
![]() BOS028TBOS R81K-X-IS10-02 |
Through-beam sensor (Emitter) | 0.3...20 m | Infrared | Cable, 2 m, PVC | Infrared | ||||
![]() BOS027YBOS 18MR-PA-RE20-S4S |
Through-beam sensor (receiver) | Ø 18 x 92 mm | PNP NO PNP NC | 0...20 m | LED, red light | Connector, M12x1-Male, 4-pin | LED, red light | ||
![]() BOS027RBOS 21M-PAI-RE30-S4 |
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 | ||
![]() BOS02APBOS R090K-NU-RX10-S75 |
Through-beam sensor | 10.7 x 43.5 x 19.5 mm | NPN normally open/normally closed (NO/NC) | 0...20 m | LED, red light | Connector, M8x1, 4-pin | LED, red light |