SICK WTB8L-P2211 Laser Photoelectric Sensor – High-Speed Precision with Background Suppression
The SICK WTB8L-P2211 Laser Photoelectric Sensor is engineered for tasks that demand accurate and fast detection of small or fast-moving items. It utilizes a Class 1 red laser beam (650 nm) to achieve a precise 1 mm light spot, ensuring stable performance across a sensing range of 20 mm to 100 mm. Compact in size at 11 × 31 × 20 mm, it fits easily into tight machine spaces. The sensor’s IP67-rated housing provides robust protection from dust and moisture, making it a dependable choice for automated production lines and quality control systems where precision and reliability are vital.
The WTB8L-P2211 leverages laser-based background suppression to maintain consistent detection even when object colors or surfaces vary. With a 2 kHz switching frequency and rapid 0.25 ms response time, it enables smooth performance in fast conveyor or packaging lines. Its adjustable sensing range and light/dark mode selection give engineers flexibility to fine-tune performance for different materials and applications. Built with rugged ABS construction and supplied with a stainless-steel mounting bracket, this sensor ensures stable, long-lasting operation—helping manufacturers reduce downtime, eliminate false triggers, and achieve higher process accuracy.
Why SICK WTB8L-P2211?
Because it combines laser precision with compact power, delivering ultra-fast and accurate detection in the smallest spaces. The WTB8L-P2211 transforms standard automation into high-speed performance, ensuring even the tiniest or fastest-moving objects are detected with pinpoint consistency—ideal for production lines that demand absolute reliability and efficiency.
What problem does it solve?
It eliminates false detections and missed targets caused by color, shine, or background variations. With its laser-based background suppression and rapid 0.25 ms response time, the WTB8L-P2211 ensures stable operation in fast, complex environments—solving visibility challenges and keeping automated processes precise, smooth, and interruption-free.
Key Features & Specifications – SICK WTB8L-P2211: 6033227
| Feature | Details | Benefit |
|---|---|---|
| Functional Principle | Photoelectric proximity sensor with background suppression | Detects objects precisely regardless of color or reflectivity. |
| Light Source | Class 1 visible red laser, 650 nm | Safe, precise targeting with high visibility and accuracy. |
| Sensing Range | 20 mm to 100 mm (max 5 mm to 100 mm) | Supports flexible setup for near and mid-range detection tasks. |
| Light Spot Size | Ø 1 mm at 100 mm distance | Enables detection of very small components with pinpoint accuracy. |
| Response Time | ≤ 0.25 ms | Ideal for detecting fast-moving items in high-speed production lines. |
| Switching Frequency | 2,000 Hz | Maintains stable performance during rapid object detection cycles. |
| Switching Output | PNP, selectable light/dark switching | Offers easy integration and flexibility for various control systems. |
| Adjustment Method | 4-turn potentiometer for fine-tuning | Allows precise setup for different materials and detection distances. |
| Connection Type | M8, 4-pin male connector | Quick, secure installation with standard industrial connectors. |
| Power Supply | 10–30 V DC, 30 mA consumption | Energy-efficient design suitable for automated systems. |
| Housing Material | Plastic ABS with PMMA optics | Durable and lightweight, ensuring long operational life. |
| Protection Rating | IP67 | Resistant to dust and water for reliable performance in harsh environments. |
| Mounting Accessory | Includes stainless steel bracket BEF-W100-A | Simplifies installation and ensures stable mounting. |
| Operating Temperature | –10 °C to +50 °C | Suitable for diverse industrial and warehouse environments. |
| Certifications | CE, cRUus, China RoHS, UKCA, Laser Safety IEC 60825-1 | Meets international quality and safety standards. |
Download SICK WTB8L-P2211 (6033227) Datasheet
Commercial Data – SICK WTB8L-P2211: 6033227
| Commercial Data | Details |
|---|---|
| EAN Number | 4047084163708 |
| Weight | 10 g |
| Country of Origin | Germany |
The Applications
1. High-Speed Packaging Line Detection
In high-volume packaging lines, small products move rapidly along conveyors and must be detected accurately for counting or sorting. The WTB8L-P2211 laser sensor’s 0.25 ms response time and 2 kHz switching frequency allow precise object recognition even at extreme speeds. Its compact 11 mm-wide housing fits easily into narrow mounting spaces, while the visible red laser enables quick alignment. The sensor’s background suppression prevents false readings from reflective packaging materials or conveyor belts, ensuring accurate and repeatable detection in continuous operation.
2. Robotic Assembly of Reflective Components
In robotic assembly stations, parts like metal pins, glass lenses, or polished surfaces often confuse traditional sensors due to glare and unpredictable reflectivity. The WTB8L-P2211 overcomes this challenge with its narrow 1 mm laser spot and background suppression technology, which locks precisely onto the target object. Its light/dark mode selection helps adapt to various materials, and its stable signal output ensures accurate pick-and-place operation. This improves robotic precision, reduces rework, and increases overall assembly speed.
3. Electronics Quality Control and Inspection
During electronics production, components such as connectors, sensors, or small circuit parts must be verified for position and presence. The WTB8L-P2211 excels in these tasks with its adjustable sensing range (20–100 mm) and fine adjustment potentiometer, enabling micro-level detection accuracy. Its IP67-rated housing protects against dust and cleaning agents, ensuring consistent inspection results in demanding manufacturing environments. This level of precision minimizes human intervention, reduces product defects, and enhances quality consistency.
4. Automated Sorting of Mixed Surface Materials
In sorting or material-handling applications, objects vary in color, gloss, or texture, which often causes unstable detection. The WTB8L-P2211 sensor uses laser background suppression to identify each object accurately, regardless of its surface finish. The fast switching response allows continuous monitoring in multi-material lines without missed detections. With its robust construction and stable optical performance, it maintains long-term reliability, supporting consistent sorting and packaging quality in automated logistics systems.
Related Products & Accessories – Compatible with SICK WTB8L-P2211 (6033227)
| Category | Model Name | Part Number | Compatibility / Benefit |
|---|---|---|---|
| Mounting Bracket (Included) | BEF-W100-A | 5311520 | Supplied with WTB8L-P2211 for secure installation and stable alignment. |
| Optional Mounting Plate | BEF-KHS-N08 | 2051607 | Provides flexible mounting orientation and easy sensor positioning for W8 Laser and compatible series. |
| Stainless Steel Mounting Plate | BEF-KHS-N11N | 2071081 | Ideal for harsh or corrosive environments requiring long-term durability. |
| M8 Male Connector (Straight) | STE-0804-G | 6037323 | Enables quick, reliable connection between sensor and control system. |
| Sensor/Actuator Cable (PVC, 5 m) | YF8U14-050VA3XLEAX | 2095889 | Suitable for clean industrial zones or chemical areas, providing flexible and stable wiring. |
| Sensor/Actuator Cable (PUR, 5 m) | YF8U14-050UA3XLEAX | 2094792 | Perfect for robot arms, drag chain setups, or environments exposed to oils and lubricants. |
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