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WTB4-3P2171

The WTB4-3P2171 is a miniature background-suppression photoelectric proximity sensor featuring a line-shaped red PinPoint LED spot. It detects objects from 15 mm to 150 mm with high precision and delivers fast, reliable performance in demanding industrial environments.

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Parameters
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Parameters
Parameter Specification
Sensor type Photoelectric proximity, background suppression
Sensing range 15 mm … 150 mm (up to 4 mm min)
Light source Visible red PinPoint LED (~650 nm)
Light spot size Line-shaped: ~5 mm × 28 mm at 50 mm
Adjustment 5-turn potentiometer
Special applications Detecting perforated or small objects; tolerant to positioning
Supply voltage 10 … 30 V DC, ripple < 5 Vpp
Current consumption ~20 mA (no load)
Output type PNP, light-switching
Maximum output current ≤ 100 mA
Response time < 0.5 ms
Switching frequency 1,000 Hz
Circuit protection Reverse-polarity, interference suppression, overcurrent/short-circuit
Housing dimensions 16 × 39.5 × 12 mm
Connection type M8, 3-pin connector
Housing material ABS plastic body; PMMA front screen
Enclosure rating IP67 (also meets IP66)
Operating temperature –40 °C … +60 °C
Storage temperature –40 °C … +75 °C
Weight ~30 g
Certification UL listed
Line-shaped light spot Facilitates reliable detection of thin, perforated, or irregular objects