Description
The SICK WL4SLG-3P2232 is a precision miniature photoelectric sensor engineered for industrial automation and object detection applications. Part of SICK’s W4 sensor family, it operates on the principle of retro-reflective autocollimation, allowing it to detect objects reliably over distances up to 4.5 meters without requiring a separate reflector.
Featuring a visible red laser light source (650 nm) with a polarized filter and a compact rectangular housing, this sensor delivers high accuracy and repeatability even with small, transparent, or glossy objects. The device includes a single teach-in button for simple commissioning, a PNP complementary output for easy interfacing with control systems, and a fast response time (< 0.5 ms) with a switching frequency up to 1 kHz for dynamic processes.
Built to withstand demanding environments, the WL4SLG-3P2232 is housed in rugged Novodur plastic rated IP66/IP67, making it resistant to dust, water ingress, and vibration. The sensor is powered from 10 V DC to 30 V DC, draws approximately 30 mA, and connects via an M8 4-pin male connector for easy installation. Its compact dimensions and robust performance make it ideal for conveyor systems, packaging lines, robotics, and other automated industrial settings.
📊 Specifications Table
| Specification | Details |
|---|---|
| Model | WL4SLG-3P2232 (SICK W4 series) |
| Sensor Type | Miniature photoelectric sensor |
| Functional Principle | Retro-reflective (autocollimation) |
| Sensing Range (max) | 0 m … 4.5 m |
| Light Source | Visible red laser (650 nm) |
| Output Type | PNP complementary |
| Switching Mode | Light/dark switching |
| Supply Voltage | 10 V DC … 30 V DC |
| Current Consumption | ~30 mA |
| Response Time | < 0.5 ms |
| Switching Frequency | Up to 1 kHz |
| Connection | Male M8, 4-pin |
| Housing Material | Plastic (Novodur), PMMA optics |
| Protection Rating | IP66, IP67 |
| Operating Temp. | –10 °C … +50 °C |
| Dimensions (W×H×D) | 12.2 × 41.8 × 17.3 mm |
| Weight | ~100 g |
| Special Features | Polarization filter, detects transparent and small objects |








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