$ 126.04
Discover the SICK WL8-P2231 photoelectric sensor for fast, precise object detection up to 4 m with IP67 protection and 0.25 ms response time.
The SICK WL8-P2231 Photoelectric Retro-Reflective Sensor is a compact, high-speed detection solution built for precision in industrial automation. It uses visible red light to detect moving objects at ranges up to 4 meters, ensuring consistent performance even at high conveyor speeds. With a durable IP67-rated ABS housing and a small form factor of 11 × 31 × 20 mm, it fits easily into tight installation spaces. Fast response time of 0.25 ms and selectable light/dark operation modes make it suitable for applications requiring quick, reliable switching. The built-in polarizing filter and LED status indicators simplify alignment and status monitoring, improving setup efficiency.
The WL8-P2231 sensor delivers dependable object detection across packaging, assembly, and logistics lines. Its high switching frequency supports rapid detection of small or fast-moving items, reducing errors in automated systems. The adjustable sensitivity control allows fine-tuning for reflective or low-contrast targets, enhancing versatility in varied production settings. Engineered with protection circuits and vibration-resistant construction, it ensures long-term reliability with minimal maintenance. Backed by exceptional operational life and stability, this model is a trusted choice for automation designers who prioritize precision, durability, and operational continuity in demanding industrial environments.
Why SICK WL8-P2231?
The SICK WL8-P2231 stands out for its lightning-fast 0.25 ms response time and stable detection even in reflective or dynamic environments. Its compact yet rugged design fits easily into tight spaces while maintaining pinpoint accuracy. Designed for reliability, it delivers consistent performance in high-speed automation and harsh industrial conditions—making precision detection effortless.
What Problem Does It Solve?
The WL8-P2231 eliminates false readings and missed detections in fast-moving or reflective production lines. Traditional sensors often fail under glossy surfaces or variable lighting, but this model’s polarized optics and intelligent switching ensure consistent, error-free operation. It simplifies setup, enhances quality control, and minimizes downtime—solving one of automation’s toughest challenges: reliable detection under any condition.
| Feature | Details | Benefit |
|---|---|---|
| Sensing Principle | Photoelectric retro-reflective sensor with autocollimation optics | Enables accurate detection of small or reflective objects without blind spots |
| Light Source | Visible red light (LED, 650 nm) | Easy alignment and precise detection even on shiny or dark surfaces |
| Sensing Range | 0 … 4 m (typical 3 m) | Reliable long-distance detection for versatile installation flexibility |
| Response Time | ≤ 0.25 ms | Supports high-speed production lines with rapid signal processing |
| Switching Frequency | 2,000 Hz | Handles fast object movement with excellent repeatability |
| Output Type | PNP, selectable light/dark switching | Simplifies integration with PLC systems and adaptable logic control |
| Connection Type | M8 male connector, 4-pin | Quick installation and easy maintenance in compact spaces |
| Adjustability | 270° potentiometer for sensitivity | Allows precise tuning for optimal performance in various conditions |
| Indicators | Green LED for stability, orange LED for switching output | Provides instant visual feedback for setup and status monitoring |
| Enclosure Rating | IP67 | Fully protected against dust and water for harsh industrial environments |
| Housing Material | Plastic (ABS), optics in PMMA | Lightweight yet durable construction for long service life |
| Weight | 10 g | Extremely light for compact machine design |
| Power Supply | 10–30 V DC | Compatible with standard industrial power sources |
| Current Consumption | 30 mA (typical, without load) | Energy-efficient operation with low power draw |
| Ambient Temperature Range | –25 °C … +55 °C | Reliable operation in demanding temperature conditions |
| Protection Features | Reverse polarity, short-circuit, and overcurrent protection | Enhances operational safety and extends product lifespan |
| MTTFD (Mean Time to Dangerous Failure) | 1,431 years | Ensures exceptional reliability and minimal downtime |
| Included Accessories | Reflector P250, Mounting bracket BEF-W100-A | Ready-to-install kit for immediate use |
| Compliance | CE, UKCA, RoHS | Meets global industrial standards and environmental requirements |
Download SICK WL8-P2231 (6033182) Datasheet
| Commercial Data | Details |
|---|---|
| EAN Number | 4047084163401 |
| Weight | 72 g |
| Country of Origin | China |
In modern packaging lines, products travel at high speeds, requiring sensors that can count every item without delay or error. The WL8-P2231 excels with its 0.25 ms response time and 2 kHz switching frequency, ensuring no product is missed even in dense flow. Its visible red light simplifies alignment and setup, while the compact body fits easily between conveyor rollers. This results in improved accuracy, reduced downtime, and efficient synchronization between conveyors, labeling, and sealing operations.
Assembly robots handling shiny or metallic parts often struggle with incorrect readings due to surface glare. The WL8-P2231 overcomes this using polarizing filters and coaxial optics, allowing it to identify even chrome or steel components accurately. Its sensitivity adjustment dial helps fine-tune the detection range for different finishes, while the light/dark switching function ensures flexible operation. This precision minimizes assembly errors, reduces production rework, and boosts process reliability in metal part handling or inspection systems.
In automated warehouses, packages of varying colors and materials must be detected and sorted swiftly. The WL8-P2231’s IP67-rated ABS housing withstands dust and moisture, ensuring consistent operation even in demanding conditions. The sensor’s LED indicators clearly display operating status, enabling quick maintenance checks. Combined with its plug-and-play M8 connector, it reduces installation time and ensures stable performance during continuous operation—ideal for logistics hubs or sorting conveyors where uptime is critical.
Labeling and packaging machines often handle clear or semi-transparent materials that are difficult for standard sensors to detect. The WL8-P2231 solves this challenge through coaxial retro-reflective optics, which ensure reliable detection regardless of material transparency. Its high switching frequency allows precise synchronization with moving film, and the compact form enables easy integration into narrow machine channels. This guarantees accurate label placement, prevents machine errors, and enhances overall line efficiency.
| Category | Description | Part Number | Model / Type | Benefit / Compatibility |
|---|---|---|---|---|
| Mounting Bracket (Included) | Stainless steel mounting bracket for wall installation | 5311520 | BEF-W100-A | Provides durable, corrosion-resistant mounting for WL8 series sensors. |
| Reflector (Included) | Fine triple reflector suitable for red-light retro-reflective sensors | 5304812 | P250 | Enables accurate detection up to 4 m for standard WL8-P2231 setups. |
| Alternative Reflector | Fine triple reflector with screw connection for precise alignment | 5308843 | P250F | Offers improved alignment stability in compact or glossy target environments. |
| Universal Clamp Bracket | Zinc-plated steel plate with universal clamp for flexible mounting | 2051607 | BEF-KHS-N08 | Allows adjustable positioning and angle setup for optimal sensor alignment. |
| Reflector Mounting Bracket | Steel universal reflector holder | 2064574 | BEF-WN-REFX | Compatible with P250, PL20, PL30A, PL40A, PL80A reflectors; easy installation. |
| Stainless-Steel Clamp Bracket | High-grade stainless-steel plate N11N for harsh conditions | 2071081 | BEF-KHS-N11N | Designed for outdoor or washdown environments requiring corrosion resistance. |
| Connection Cable (PVC) | M8, 4-pin straight A-coded, 5 m sensor/actuator cable | 2095889 | YF8U14-050VA3XLEAX | Ideal for general industrial use in clean environments. |
| Connection Cable (PUR) | M8, 4-pin straight A-coded, 5 m, halogen-free cable | 2094792 | YF8U14-050UA3XLEAX | Suitable for robots, oily areas, and drag chain applications. |
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Warranty – 1-year warranty for your peace of mind.
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