$ 115.92
Compact SICK WTB11-2N2431 photoelectric sensor with background suppression for accurate object detection in tight industrial spaces and harsh environments.
The SICK WTB11-2N2431 photoelectric sensor with background suppression is a compact proximity sensor engineered for accurate object detection in space-constrained industrial environments. It uses visible red LED technology combined with precise background suppression to reliably detect targets within a short to medium sensing range while ignoring reflective or moving backgrounds. Housed in a slim W11-2 rectangular design, this sensor is well suited for tight machine layouts, automated assembly equipment, and conveyor systems. Its fast switching behavior and robust enclosure support stable performance in demanding production conditions where accuracy and consistency are essential.
The SICK WTB11-2N2431 background suppression photoelectric sensor is designed to maintain reliable detection despite changes in object color, surface texture, or ambient conditions. A finely controlled light spot improves selectivity, helping reduce false signals caused by nearby structures. The quick response time enables precise detection in fast-moving processes, while the durable housing resists dust, moisture, and frequent cleaning. Simple mechanical adjustment and standard M12 connectivity allow rapid setup and replacement, making this sensor a practical choice for manufacturers aiming to minimize downtime and ensure long-term operational stability.
Why SICK WTB11-2N2431?
The SICK WTB11-2N2431 stands out because it delivers precision sensing in applications where space, reliability, and stability all matter at once. Developed by SICK, this sensor combines compact housing with intelligent background suppression, allowing it to perform consistently in crowded machine layouts. Its fast response, long service life, and rugged construction make it a dependable choice for OEMs who want predictable performance without frequent recalibration or maintenance interruptions.
What problem does it solve?
The SICK WTB11-2N2431 solves the common challenge of unreliable object detection caused by reflective backgrounds, varying object colors, or tight installation spaces. In automated environments, false triggers and missed detections can slow production or cause defects. This sensor isolates the target from its background, ensuring stable switching even in dynamic conditions. As a result, it improves process accuracy, reduces downtime, and helps maintain smooth, repeatable operation across demanding industrial workflows.
| Feature | Details | Benefit |
|---|---|---|
| Sensing Principle | Photoelectric proximity sensor with background suppression | Reliable object detection while ignoring reflective or moving backgrounds |
| Sensing Range | 20 mm to 350 mm | Flexible detection for short- to mid-range industrial applications |
| Light Source | Visible red LED, 640 nm wavelength | Easy visual alignment and stable detection performance |
| Light Spot Size | Ø 6 mm at 200 mm | Precise target detection with reduced false triggering |
| Switching Output | NPN, complementary output | Seamless integration with common PLC and control systems |
| Response Time | ≤ 2.5 ms | Supports fast-moving production and high-speed automation |
| Switching Frequency | Up to 200 Hz | Accurate detection in dynamic and repetitive processes |
| Adjustment Method | 5-turn potentiometer | Fine, repeatable sensing range adjustment for precise setup |
| Supply Voltage | 10 V DC to 30 V DC | Compatible with standard industrial power systems |
| Connection Type | M12 male connector, 4-pin | Quick installation and easy sensor replacement |
| Housing Design | Compact rectangular W11-2 housing | Ideal for tight machine spaces and compact assemblies |
| Housing Material | ABS plastic housing, PMMA optics | Lightweight yet durable construction |
| Ingress Protection | IP66, IP67, IP69K | Reliable operation in dusty, wet, and washdown environments |
| Operating Temperature | −30 °C to +60 °C | Stable performance in harsh industrial conditions |
| Certifications | CE, UKCA, cULus, EAC, RoHS | Approved for global industrial deployment |
| Service Life (LED) | Approx. 100,000 hours | Reduced maintenance and long operational lifespan |
Download SICK WTB11-2N2431 (1041378) Datasheet
| Commercial Data | Details |
|---|---|
| EAN Number | 4047084183690 |
| Weight | 56 g |
| Country of Origin | Hungary |
In automated logistics and distribution centers, sensors are often installed close to belts, rollers, and metal guides. The SICK WTB11-2N2431 performs reliably in this setting because its background suppression separates the package from the conveyor structure behind it. Boxes, bags, or trays with different colors or surface finishes can be detected consistently without false switching. The fast response time supports accurate counting and spacing at higher conveyor speeds, helping operators maintain smooth material flow, reduce sorting errors, and improve overall line efficiency.
Assembly equipment frequently requires confirmation that a part is correctly positioned before the next operation begins. The compact housing of the SICK WTB11-2N2431 allows it to fit into narrow fixtures and densely packed tooling areas. Its controlled sensing distance ensures that metal frames or mounting plates behind the target do not interfere with detection. This improves reliability when monitoring small components, connectors, or subassemblies, reducing the risk of missed parts, machine stops, or product defects during automated or semi-automated assembly processes.
Packaging lines handle a wide range of products, films, and box formats, which can cause inconsistent sensor performance. The SICK WTB11-2N2431 maintains stable detection by ignoring reflections from nearby machine surfaces and focusing only on the intended object. Adjustable sensitivity makes it easy to adapt the sensor to changing package sizes or materials. As a result, it helps prevent sealing faults, material jams, and unnecessary rejects, supporting higher uptime and more consistent quality in packaging and sealing applications.
In processing environments where moisture, dust, or frequent cleaning is unavoidable, sensor durability becomes critical. The SICK WTB11-2N2431 is well suited for these conditions due to its sealed housing and robust construction. It can be used to confirm product presence on carriers, detect items entering a processing zone, or monitor positioning before downstream operations. Stable detection performance and long service life reduce maintenance needs, making it a dependable choice for applications where access is limited and operational continuity is essential.
| Category | Model Name | Part Number | Benefit |
|---|---|---|---|
| Mounting Bracket | BEF-WG-W12 | 2013942 | Stainless steel mounting bracket designed for stable and vibration-resistant sensor installation |
| Universal Clamp Plate | BEF-KHS-N11N | 2071081 | Flexible mounting solution for complex mechanical layouts and adjustable positioning |
| M12 Connector (Male) | STE-1204-G | 6009932 | Reliable electrical connection with screw-type terminals for secure signal transmission |
| Sensor Cable (PVC) | YF2A14-050VB3XLEAX | 2096235 | Durable 5 m sensor cable suitable for standard industrial environments |
| Sensor Cable (PUR, Halogen-Free) | YF2A14-050UB3XLEAX | 2095608 | High-flex cable designed for drag chain use and oil-resistant applications |
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