Description
The SICK WTB2S-2P3251 is a high-performance, ultra-compact photoelectric proximity sensor from SICK’s W2S-2 series, designed for precise object detection in automated industrial environments. Using background suppression technology, it accurately senses objects at varying distances without the need for external reflectors, reliably distinguishing objects from their background. The sensor emits a visible red PinPoint LED light, providing a clearly visible and well-defined light spot for easy alignment and setup.
Engineered for flexibility and reliability, the WTB2S-2P3251 operates on 10 V DC to 30 V DC, draws minimal current (~20 mA), and offers a PNP output with light/dark switching modes. It supports a fast response time (< 0.5 ms) and high switching frequency (up to 1000 Hz), ideal for dynamic detection applications. The sensor’s rugged plastic housing with IP67 protection provides dependable operation in dusty and moist industrial settings. Its small rectangular form factor and straightforward 4-pin M8 connection also simplify installation in tight spaces.
📊 Specifications Table
| Specification | Details |
|---|---|
| Model | WTB2S-2P3251 (SICK W2S-2 series) |
| Sensor Type | Photoelectric proximity sensor |
| Functional Principle | Background suppression |
| Sensing Range (Max) | 1 mm … 150 mm (max detection) |
| Typical Sensing Distance | 18 mm … 110 mm (depending on reflectivity) |
| Light Source | Visible red PinPoint LED, ~640 nm |
| Output Type | PNP switching output |
| Switching Mode | Light/dark switching |
| Supply Voltage | 10 V DC … 30 V DC |
| Current Consumption | ~20 mA |
| Maximum Output Current | ≤ 50 mA |
| Response Time | < 0.5 ms |
| Switching Frequency | Up to 1000 Hz |
| Connection | Cable with M8 4-pin male connector (200 mm) |
| Cable Material | PVC |
| Housing Material | Plastic (ABS/PC) |
| Optics Material | PMMA |
| Protection Rating | IP67 |
| Operating Temperature | –25 °C … +50 °C |
| Storage Temperature | –40 °C … +75 °C |
| Dimensions (W×H×D) | 7.7 mm × 27.5 mm × 13.5 mm |
| Weight | ~18.8 g |
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