SICK WTB4S‑3N1361 Miniature Background Suppression Photoelectric Sensor, 4–180 mm Adjustable Range NPN 2m Cable IP66/IP67 W4S Industrial Detection Sensor

SICK WTB4S‑3N1361 W4S Miniature Background Suppression Photoelectric Sensor for Versatile Industrial Detection

Versatile Adjustable Sensing & PinPoint Optical Technology

4–180 mm Wide Tunable Detection Coverage

SICK WTB4S‑3N1361 provides an ultra-flexible sensing range calibrated from 4 mm to 180 mm, supporting both micro near-field detection and medium-distance target monitoring. The effective stable detection distance for standard reflective targets ranges from 10 mm to 180 mm, perfectly adapting to varying target sizes and uneven installation distances on automated equipment. Equipped with a precision mechanical potentiometer, the sensor enables accurate on-site range tuning without additional debugging tools, maximizing field application flexibility for diverse production processes.

High-Precision PinPoint Red LED Detection Beam

Adopting professional 650 nm visible red PinPoint LED light source, SICK WTB4S‑3N1361 generates a clear, concentrated light spot for intuitive visual alignment during installation. The optimized optical projection structure eliminates scattered light interference, ensuring precise targeting on small, thin and low-reflectivity objects. Compared with ordinary diffuse photoelectric sensors, the dedicated background suppression optical system effectively filters signal disturbances from metal frames, conveyor surfaces and rear background objects to eliminate false triggering.

Stable Electrical Performance & Industrial Circuit Compatibility

Universal NPN Light-On Output Configuration

Designed with standard NPN normally open light-on switching logic, SICK WTB4S‑3N1361 achieves seamless compatibility with mainstream industrial PLC input modules and conventional automation control circuits. The sensor operates steadily on 10 V to 30 V DC universal industrial power supply with ultra-low 20 mA power consumption, reducing long-term equipment energy consumption. It supports up to 100 mA maximum load current, delivering stable and reliable signal driving for continuous industrial operation.

1000 Hz High-Speed Switching & Full Circuit Protection

With a 1000 Hz high switching frequency, SICK WTB4S‑3N1361 adapts to high-speed cyclic detection tasks on packaging lines, conveyor systems and automated assembly equipment. Built-in reverse polarity protection, short-circuit protection and overload resistance comprehensively safeguard internal electronic components. Advanced pulse suppression technology filters on-site voltage ripples and electromagnetic interference, ensuring consistent jitter-free signal output during 24/7 uninterrupted operation.

Compact W4S Housing & Practical On-Site Deployment

Lightweight Industrial ABS Housing Structure

SICK WTB4S‑3N1361 features a miniaturized rectangular ABS plastic housing with lightweight 30g body weight and optimized compact dimensions. The high-strength composite housing resists daily workshop abrasion, minor mechanical collision and environmental aging, maintaining long-term structural stability and optical detection accuracy. The streamlined body design fits perfectly into narrow installation gaps of compact automated machinery and dense equipment layouts.

2m Fixed 3-Core Cable for Stable Wiring

Comes with a standardized 2-meter 3-core PVC fixed cable, SICK WTB4S‑3N1361 supports direct on-site hardwiring without extra adapters or connectors. The flexible and wear-resistant cable withstands repeated bending, stretching and mechanical friction during equipment operation, effectively reducing loose connection and circuit failure risks. Standard cable length matches most conventional industrial machine layouts to simplify installation and daily maintenance replacement.

Superior Environmental Resistance & Long-Term Durability

Dual IP66/IP67 Industrial Ingress Protection

Fully sealed integrated housing structure grants SICK WTB4S‑3N1361 dual IP66 and IP67 industrial protection ratings. The sensor effectively blocks fine industrial dust accumulation, solid debris intrusion, water splashes and equipment cleaning spray. It maintains stable detection performance in dusty factory floors, humid workshop environments and frequently cleaned equipment stations, requiring minimal routine maintenance.

Reliable Wide-Temperature Operational Stability

SICK WTB4S‑3N1361 maintains consistent detection accuracy across standard industrial temperature ranges, adapting to seasonal temperature fluctuations and minor equipment heat radiation. Low temperature drift optical and electrical design prevents detection deviation caused by ambient temperature changes, ensuring stable operational performance in long-cycle industrial production scenarios.

Procurement Value & Spare Part Standardization Benefits

Universal W4S Series Plug-and-Play Replacement

SICK WTB4S‑3N1361 follows unified W4S series mechanical and electrical specifications. Standard mounting dimensions, NPN output logic and cable layout support one-to-one direct replacement for outdated miniature photoelectric sensors. Unified model standards reduce factory spare part inventory categories, simplify procurement management and lower equipment upgrade costs.

Cost-Effective All-Round Detection Solution

Balancing wide adjustable range, high-speed response and powerful anti-interference performance, SICK WTB4S‑3N1361 serves as a universal cost-effective detection solution for general industrial automation. No routine calibration and ultra-low failure rate minimize unplanned production downtime and long-term maintenance expenses, ideal for large-scale standardized factory deployment.

Core Industrial Application Scenarios

Packaging Machinery & Logistics Automation

SICK WTB4S‑3N1361 is widely applied in packaging line product counting, package positioning confirmation, material feeding monitoring and logistics conveyor gap detection. The 180mm maximum sensing range and high-speed switching capability perfectly match high-speed packaging and sorting system operational requirements, ensuring stable and efficient production line operation.

Precision Assembly & General Factory Automation

Electronic component presence verification, small part positioning detection and automated station in-place monitoring are core application scenarios. The advanced background suppression function solves false detection problems caused by complex background interference, while the compact housing adapts to dense mechanical layouts of precision assembly equipment and general automated machinery.