The SICK WTB4 Series (part of the elite W4, W4-3, and upgraded W4F miniature sensor portfolios) represents the global standard for photoelectric proximity sensors with advanced background suppression (BGS). Unlike standard diffuse sensors that can be fooled by changing background textures, shiny metallic panel linings, or operator clothing, the WTB4 focuses strictly on the exact distance threshold set by the user. Packed into a space-saving rectangular housing, it detects dark, glossy, multi-coloured, or small objects with absolute reliability.
Non-returnable
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Product Details
Key Specifications (WTB4-3P2161 Baseline Profile)
Feature
Detail
Manufacturer Series
SICK AG (Germany) — W4 / W4-3 Product Range
Sensing Principle
Photoelectric Proximity Sensor with Background Suppression (BGS)
Sensing Distance Range
4 mm to 150 mm max (Reliable window: 15 mm to 150 mm)
Light Source Type
High-precision Visible Red PinPoint LED (650 nm wavelength)
Light Spot Footprint
Approximately Ø 7 mm at a distance of 50 mm
Supply Input Voltage
10 to 30 VDC (Includes reverse-polarity and ripple protection)
Output Current Max
100 mA maximum load capability
Switching Frequency
Up to 1,000 Hz processing cycles
Response Signal Speed
Less than 500 μs latency transit time
Mechanical Dimensions
Ultra-compact block: 16 mm (W) x 39.5 mm (H) x 12 mm (D)
Enclosure Ingress Sealing
Rated to dual IP66 and IP67 standards
Ratings And Reviews
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