SICK WTB4‑3N1361 Miniature Background Suppression Photoelectric Sensor, 4–180 mm Adjustable Range NPN 2m Cable IP66/IP67 W4 Industrial Detection Sensor

SICK WTB4‑3N1361 Compact W4 Background Suppression Photoelectric Sensor for Precision Small-Part Detection

Precision Optical Detection & Adjustable Sensing Performance

Wide 4–180 mm Tunable Detection Range

SICK WTB4‑3N1361 supports flexible manual range adjustment covering 4 mm to 180 mm, catering to diverse short and medium-distance industrial detection requirements. Equipped with a 5-turn precision potentiometer, the sensor enables accurate on-site calibration to match target sizes and installation distances. The versatile adjustable design eliminates frequent model replacement during production line upgrades, greatly improving field deployment flexibility.

PinPoint Red Light Anti-Interference Technology

Adopting advanced PinPoint red LED light source with 650 nm wavelength, SICK WTB4‑3N1361 outputs a focused 7mm light spot at 50mm distance for clear visual alignment. The concentrated optical beam effectively filters background interference from metal frames, conveyor surfaces and reflective materials. Professional background suppression functionality ensures stable detection regardless of uneven or reflective mounting backgrounds, minimizing false trigger errors.

Stable Electrical Performance & Circuit Safety Design

Universal NPN Output & Industrial Voltage Compatibility

SICK WTB4‑3N1361 operates steadily on 10 V to 30 V DC universal industrial power supply with only 20 mA low power consumption. It features standard NPN switching output with 100 mA maximum load capacity, fully compatible with mainstream industrial PLC input modules and automation control systems. Standard electrical parameters enable seamless integration with new and retrofitted factory equipment control loops.

High-Speed Switching & Full Circuit Protection

With a 1000 Hz high switching frequency, SICK WTB4‑3N1361 adapts to fast cyclic detection on high-speed packaging and assembly lines. Built-in reverse polarity protection, short-circuit protection and surge resistance comprehensively protect internal circuits from wiring errors and instantaneous voltage fluctuations. Optimized circuit design ensures continuous jitter-free signal output for long-term 24/7 operation.

Miniature Mechanical Structure & Installation Convenience

Compact Lightweight ABS Housing

SICK WTB4‑3N1361 features a miniature rectangular ABS plastic housing with ultra-light 30g body weight, perfectly suited for narrow installation gaps in compact automated machinery. The high-strength housing resists daily workshop abrasion and structural deformation, maintaining stable optical alignment during long-term equipment operation. Integrated structural design simplifies fixture matching and on-site fixing.

2m Fixed Cable & Integrated Mounting Bracket

Equipped with a 2-meter 3-core fixed PVC cable, SICK WTB4‑3N1361 supports direct plug-and-play wiring without extra adapters. The durable flexible cable withstands repeated bending and mechanical friction, reducing loose connection risks. The sensor comes with a matched mounting bracket, enabling fast, tool-assisted installation and precise position calibration to shorten commissioning time.

Harsh Environment Resistance & Operational Durability

Dual IP66/IP67 Ingress Protection

SICK WTB4‑3N1361 boasts dual IP66 and IP67 industrial protection ratings, providing comprehensive defense against fine dust accumulation, debris intrusion, water splashes and spray. The fully sealed internal structure adapts to dusty factory floors, humid workshop environments and frequently cleaned equipment stations, maintaining stable detection performance without frequent maintenance.

Wide Temperature Adaptive Operation

This W4-series photoelectric sensor operates reliably across an extended temperature range, resisting extreme cold and moderate heat radiation in industrial sites. Stable temperature drift control ensures consistent detection accuracy through seasonal environment changes and continuous equipment operation, delivering up to 100,000 hours of long service life under standard working conditions.

Procurement Value & Spare Part Standardization

Cost-Effective Universal Replacement Solution

SICK WTB4‑3N1361 follows unified W4 series dimensional and electrical specifications, supporting direct one-to-one replacement for outdated miniature photoelectric sensors. Standardized NPN output, cable layout and mounting structure reduce factory spare part categories, simplify inventory management and lower overall procurement and stocking costs.

Low-Maintenance High-Stability Sensing

Featuring low power consumption, ultra-low false trigger rate and rugged industrial-grade structure, SICK WTB4‑3N1361 requires no routine calibration or complex maintenance. Long service life and stable operational performance minimize unplanned downtime and equipment maintenance workload, maximizing production line operational efficiency.

Core Industrial Application Scenarios

Small Object Precision Detection

SICK WTB4‑3N1361 excels at tiny component presence verification, miniature part counting and thin material detection in precision automation. The focused light spot and accurate background suppression ensure reliable identification of small targets that standard diffuse sensors cannot detect, ideal for electronic assembly and micro-packaging equipment.

Packaging & Conveyor Automation Monitoring

Package positioning confirmation, conveyor gap monitoring, material feeding detection and secondary packaging inspection are core application scenarios. The adjustable long-range sensing and high-speed response perfectly match high-speed packaging lines, logistics sorting systems and general factory automated conveying equipment.