Many engineers reviewing Autonics BW20-20P also explore Autonics Proximity Sensor, Autonics Digital Counter and Autonics Bwp20 08P, ensuring they donβt miss strong alternatives before finalizing procurement decisions.
Autonics BW20-20P Area Sensor
The Autonics BW20-20P Area Sensor offers Through-beam type(direct beam) sensing, 0.1 to 7m sensing distance, Infrared LED(850nm modulated) light source, 12-24VDC power supply , PNP open collector output. Manufactured by Autonics under the Autonics Area Sensor category, this model belongs to the Autonics BW Series.

| Brand | Autonics |
| Product Type | Area Sensor |
| Model Number | BW20-20P |
Autonics BW20-20P Area Sensor β Technical Specifications
| Specification | Value |
|---|---|
| Sensing type | Through-beam type(direct beam) |
| Sensing distance | 0.1 to 7m |
| Light source | Infrared LED(850nm modulated) |
| Optical axis pitch | 20mm |
| Number of optical axes | 20 |
| Power supply | 12-24VDC |
| Control output | PNP open collector |
| Operation mode | Light ON |
| Environment_Ambient illumination | Ambient light: Max. 10,000lx(receiver illumination) |
| Environment_Ambient temperature | -10 to 55β, storage: -20 to 60β |
| Connection type | Cable connector type(Γ5, 300mm, M12) |
| Protection structure | IP65 |
| Environment_Ambient humidity | 35 to 85% RH, storage: 35 to 85% RH |
| Min. sensing target | Opaque material of min. Γ30mm |
| Response time | Max. 10ms |
| Material | β’ Case: Aluminum, β’ Front cover, sensing part: Acrylic |
| Cable specification | Γ5mm, 4-wire, 300mm, M12 connector |
| Sensing height/Total length | 380/400mm |
| Accessories | Bracket A: 4, Bracket B: 4, Fixing bolt: 8 |
| Weight | BW20-48: Approx. 2.1kg(approx. 1.4kg) |
The Autonics BW20-20P General Purpose Area Sensor uses a through-beam type sensing method with a detection range of 0.1 to 7 meters, providing dependable object detection across large coverage zones. Equipped with a 20mm optical axis pitch and 20 optical axes, it ensures high detection accuracy for opaque targets as small as Γ30mm. The sensor utilizes a modulated Infrared LED (850nm) light source to maintain stability even under ambient light conditions up to 10,000 lux.
Operating on a 12β24VDC Β±10% power supply, the BW20-20P features a PNP open collector output and supports a Light ON mode for flexible integration with control systems. Its IP65-rated aluminum housing with acrylic front cover ensures resistance to dust and water ingress, making it suitable for challenging environments. The device offers a fast response time of just 10ms and uses a durable Γ5mm, 300mm M12 connector cable for secure connections. Learn more about the full range of Autonics products at Autonics Sensors & Controllers.
The BW20-20P Area Sensor is widely used in material handling for detecting items on conveyors, in packaging lines for ensuring box alignment, and in assembly processes for part positioning verification. It also serves as a safety detection solution in automated equipment, preventing accidental intrusion into hazardous zones. Engineers value its stable detection, ease of installation, and rugged build for reliable operation in demanding settings. For dependable area monitoring, the Autonics BW20-20P remains a trusted choice.







