SICK WTB4‑3N1371 Miniature Background Suppression Photoelectric Sensor, 4–150 mm Adjustable Range NPN 2m Cable IP66/IP67 W4 Industrial Precision Sensor

SICK WTB4‑3N1371 Compact W4 Background Suppression Photoelectric Sensor for Miniature Precision Automation Detection

Ultra-Fast Response & Optimized Optical Detection System

High-Precision 4–150 mm Tunable Sensing Range

SICK WTB4‑3N1371 features a calibrated 4 mm to 150 mm adjustable detection range, covering common short and medium-distance precision automation tasks. Equipped with a 5-turn precision potentiometer, the sensor supports fine manual on-site tuning to match varying target sizes, mounting distances and material properties. The optimized range design balances near-field micro-detection and medium-distance monitoring, eliminating frequent sensor model replacement during production line modification.

Line-Shaped Red LED Beam & Superior Background Suppression

Adopting professional 650 nm visible red PinPoint LED with 30° line-shaped light projection design, SICK WTB4‑3N1371 produces a uniform and focused light spot for precise target alignment. The advanced background suppression optical system effectively ignores reflective conveyor belts, metal frames and uneven background surfaces. It delivers consistent detection results for tiny, thin and semi-transparent targets with minimal false triggering in complex workshop environments.

Sub-Millisecond Fast Response Performance

SICK WTB4‑3N1371 achieves ultra-fast response time below 0.5 ms, supporting high-frequency dynamic detection on fast-moving automated lines. Rapid signal switching capability ensures accurate capturing of high-speed passing miniature components, outperforming standard miniature photoelectric sensors in high-tempo precision detection scenarios.

Industrial-Grade Electrical Stability & Protective Mechanism

Standard NPN NO Output & Low Power Consumption

Operating on universal 10 V to 30 V DC industrial voltage, SICK WTB4‑3N1371 maintains low power consumption below 30 mA for energy-efficient long-term operation. It integrates standard NPN normally open output with 100 mA maximum load capacity, fully compatible with mainstream PLC input modules and industrial control systems. Light-on switching logic conforms to general automation control standards for seamless system integration.

Full Circuit Protection & Anti-Interference Design

Built with comprehensive industrial circuit protection, SICK WTB4‑3N1371 supports reverse polarity protection, short-circuit protection and overload current resistance. Professional pulse interference suppression technology filters on-site voltage ripples and signal noise. Robust electrical structure ensures jitter-free stable signal output during 24/7 continuous cyclic operation.

Ultra-Compact Mechanical Layout & Field Deployment Flexibility

Slim Lightweight Industrial Housing

SICK WTB4‑3N1371 adopts a miniature flat rectangular housing structure with optimized 16 mm × 39.5 mm × 12 mm dimensions and only 20g lightweight body weight. Constructed with high-strength Bayblend and PMMA composite materials, the housing resists daily workshop abrasion, structural deformation and minor mechanical collision, maintaining long-term optical detection accuracy.

2m Fixed 3-Core Cable & Tool-Free Installation

Comes with a durable 2-meter 3-core PVC fixed cable, SICK WTB4‑3N1371 enables direct on-site wiring without extra adapters or connectors. The flexible cable withstands repeated bending and mechanical friction, reducing loose connection and circuit failure risks. Standard mounting hole spacing and matched brackets support fast positioning and fixation, greatly shortening equipment commissioning time.

Extreme Environment Adaptability & Long Service Life

Dual IP66/IP67 Ingress Protection Rating

Fully sealed internal structure grants SICK WTB4‑3N1371 dual IP66 and IP67 industrial protection grades. It effectively resists fine industrial dust accumulation, debris intrusion, water splashes and equipment cleaning spray. The tight sealing design adapts to dusty, humid and frequently cleaned industrial workshop environments with low maintenance demands.

Ultra-Wide Temperature Resistance Range

SICK WTB4‑3N1371 features industry-leading wide temperature adaptability, operating stably from -25 °C to +60 °C, with storage temperature ranging from -40 °C to +75 °C. Low temperature drift optical and electrical design maintains consistent detection precision under extreme cold, high heat and seasonal temperature fluctuations, suitable for variable indoor industrial working conditions.

Super Long Mechanical & Electrical Service Life

With over 100 million mechanical operation cycles and 500,000+ electronic switching cycles, SICK WTB4‑3N1371 delivers exceptional durability. The sensor supports long-term uninterrupted factory operation, effectively reducing equipment replacement frequency and unplanned production downtime.

Procurement Advantages & Spare Part Standardization Value

Universal W4 Series Plug-and-Play Replacement

SICK WTB4‑3N1371 follows unified W4 series mechanical and electrical specifications. Standard NPN output logic, mounting dimensions and cable layout support one-to-one direct replacement for outdated miniature photoelectric sensors. Unified model standards simplify factory spare part classification and optimize inventory cost control.

Cost-Effective Precision Detection Solution

Combining ultra-fast response, wide temperature tolerance and reliable anti-interference performance, SICK WTB4‑3N1371 provides high cost-performance for precision automation projects. No routine calibration and ultra-low failure rate minimize long-term operational and maintenance expenses for standardized industrial deployment.

Specialized Industrial Application Scenarios

Electronic & Micro Component Precision Detection

SICK WTB4‑3N1371 is ideal for tiny electronic component presence verification, micro-part counting and thin substrate detection. The line-shaped focused light beam and high-sensitivity background suppression accurately identify ultra-small targets that conventional diffuse sensors miss, perfectly fitting precision electronic assembly and micro-processing equipment.

High-Speed Packaging & Logistics Conveyor Monitoring

Package edge positioning, lightweight material feeding confirmation and conveyor line gap detection are core application scenarios. The sub-millisecond response speed and 4–150mm flexible range adapt to high-speed packaging machinery, sorting systems and automated conveying equipment, ensuring stable and efficient production line operation.