SICK WTB4SP-1G311120ZZZ Photoelectric Proximity Sensor
Overview

The WTB4SP-1G311120ZZZ is a compact, background-suppression photoelectric proximity sensor from SICK’s W4 / WTB4SP family. It features a robust VISTAL® housing, visible red LED (PinPoint), and push-pull (PNP/NPN) output, making it well suited for precise object detection in industrial automation environments.
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Key Specifications & Features
Feature Specification / Detail
Sensing Principle Photoelectric proximity sensor with background suppression
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Sensing Range 4 mm (minimum) to 250 mm (maximum)
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Output Type Push-pull (PNP / NPN)
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Switching Mode Light switching (i.e. output active when light is detected)
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Light Source / Wavelength PinPoint LED, visible red light
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Adjustment / Calibration Teach-Turn adjustment (user configurable)
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Housing Material VISTAL® (plastic)
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Connection / Cable 3-wire cable, 2 m length
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Advantages & Use Cases

Precise Background Suppression
Able to reliably discriminate objects against varying backgrounds in close-range applications.

Flexible Output Interface
Push-pull configuration supports both PNP and NPN logic, making it easier to integrate with different PLC and control systems.

Visible LED & Teach Capability
The visible light beam aids in alignment; the teach-turn adjustment provides field tuning without tools.

Compact & Durable Design
The small footprint and durable Vistal housing suit tight installations and industrial environments.

Suitable for Small Object Detection
With a 4 mm minimum detection distance, it is effective in capturing very close or thin targets.