$ 188.37
SICK WTB250-2N2441 photoelectric sensor with background suppression ensures accurate object detection, fast response, and reliable performance in industrial automation.
The SICK WTB250-2N2441 photoelectric sensor with background suppression is a compact proximity sensor engineered for precise object detection in industrial automation systems. It is designed to reliably identify objects within a defined range while actively suppressing background reflections that often cause false signals. Using visible red LED light and a focused optical design, this sensor ensures stable detection even when targets and backgrounds are close together. Its slim rectangular housing and rugged construction make it ideal for installations with limited space, helping manufacturers maintain consistent detection performance in fast-paced and demanding production environments.
In real-world applications, the SICK WTB250-2N2441 helps operators overcome challenges such as reflective machine frames, changing product colors, and tight mounting constraints. The background suppression function allows the sensor to distinguish the intended object from nearby surfaces, improving accuracy on conveyors, assembly lines, and packaging machines. Quick response time supports high-speed motion without missed detections, while straightforward sensitivity adjustment simplifies setup and maintenance. With its durable housing and reliable switching behavior, this sensor reduces unplanned downtime and delivers dependable performance throughout long-term industrial operation.
Why SICK WTB250-2N2441?
The SICK WTB250-2N2441 is chosen when detection reliability truly matters. Its intelligent background suppression allows it to “see” the target instead of the surroundings, even in tight spaces filled with reflective metal or moving machine parts. Combined with fast response, compact housing, and industrial-grade durability, it delivers consistent results where ordinary photoelectric sensors struggle, making it a dependable choice for demanding automation environments.
What problem does it solve?
This sensor eliminates false switching caused by shiny backgrounds, varying object colors, and unstable mounting distances. In many production lines, standard sensors misread reflections or background surfaces, leading to errors and downtime. The WTB250-2N2441 solves this by precisely limiting the sensing distance, ensuring only the intended object is detected, which improves process accuracy, reduces stoppages, and increases overall system reliability.
| Feature | Details | Benefit |
|---|---|---|
| Detection Principle | Background suppression | Prevents false triggering from reflective or nearby backgrounds |
| Sensing Range | 150 mm to 500 mm | Flexible detection distance for compact and mid-range applications |
| Light Source | Visible red LED | Easy alignment and stable detection on varied object colors |
| Optical Focus | Approx. 3° | Precise sensing zone for accurate object discrimination |
| Response Time | ≤ 3 ms | Supports high-speed production and fast-moving objects |
| Switching Output | NPN | Simple integration with standard PLC and control systems |
| Switching Mode | Light / Dark switching (selectable) | Adaptable logic for different control strategies |
| Output Current | Up to 100 mA | Reliable signal output for industrial inputs |
| Supply Voltage | 10 V DC to 30 V DC | Wide voltage tolerance for diverse machine designs |
| Adjustment Method | 2-turn potentiometer with position indicator | Fine sensitivity tuning for stable commissioning |
| Status Indicators | Green stability LED, yellow signal LED | Quick visual diagnostics during setup and operation |
| Connection Type | M12, 4-pin male connector | Fast installation and secure electrical connection |
| Housing Material | Plastic (ABS), optics PMMA | Lightweight yet durable for industrial environments |
| Enclosure Rating | IP67 | Resistant to dust, moisture, and washdown conditions |
| Operating Temperature | –25 °C to +55 °C | Reliable performance in harsh factory climates |
| Certifications | CE, UKCA, cRUus, EMC compliant | Meets global industrial and safety standards |
Download SICK WTB250-2N2441 (6044679) Datasheet
| Commercial Data | Details |
|---|---|
| Weight | 135 g |
| Country of Origin | China |
In automated packaging lines, cartons often travel very close to guide rails, frames, or other reflective machine parts. The SICK WTB250-2N2441 is used to detect only the carton surface while ignoring nearby structures, even when box colors or surface finishes change. Its background suppression keeps the sensing zone controlled, preventing false signals that could stop the conveyor or miscount products. The fast response time allows accurate triggering at higher conveyor speeds, supporting smooth operation of diverters, counters, and labeling systems while improving throughput and reducing production interruptions.
Assembly processes frequently require confirmation that a component is correctly placed before the next operation begins. The WTB250-2N2441 performs well in tight assembly spaces where parts are close to fixtures or metal tooling. By suppressing the background, the sensor focuses only on the target component rather than the surrounding jig. This ensures reliable detection of small or dark parts and helps prevent incomplete assemblies. Clear status indicators and simple adjustment make setup efficient, improving quality assurance and reducing rework caused by missed or incorrect part detection.
In packaging machinery, inconsistent product height or positioning can lead to sealing errors or damaged packaging. The SICK WTB250-2N2441 is applied to monitor product presence within a defined distance window, triggering machine actions only when the product is correctly positioned. Its narrow optical focus avoids reacting to shiny machine components behind the product. This controlled detection improves timing accuracy for sealing, pushing, or stacking actions, helping manufacturers maintain packaging quality while minimizing waste and unplanned machine stops.
Automated material handling systems rely on consistent detection of totes and trays moving through transfer points. The WTB250-2N2441 provides stable sensing even in environments with vibration, dust, or varying lighting conditions. Background suppression ensures the sensor responds only to the load carrier and not to conveyor rollers beneath it. With its robust housing and dependable switching behavior, the sensor supports continuous flow in intralogistics operations, reducing maintenance effort and helping distribution systems operate reliably around the clock.
| Category | Model Name | Part Number | Benefits |
|---|---|---|---|
| Mounting Accessory | BEF-W250 | 5305850 | Dedicated mounting bracket ensures stable installation and precise sensor alignment |
| Mounting Accessory | BEF-KHS-N11N | 2071081 | Universal clamp solution enables flexible mounting on round bars or machine structures |
| Sensor Cable | YF2A14-050VB3XLEAX | 2096235 | PVC cable suitable for standard industrial environments with reliable signal transmission |
| Sensor Cable | YF2A14-050UB3XLEAX | 2095608 | PUR, halogen-free cable designed for drag chain use and oil-exposed environments |
| Connector / Terminal | STE-1204-G | 6009932 | Screw-terminal connector simplifies wiring and control cabinet integration |
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Warranty – 1-year warranty for your peace of mind.
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