WTB9L-3N2491 - SICK - Products - Easy Semiconductor Technology (Hong Kong) Limited 易擇半導體科技(香港)有限公司

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Become part of our mission to advance intelligent manufacturing. We provide a platform where professional growth aligns with sustainable impact. Beyond a rewarding career, our unique program for controller recycling and education extends the value of technology while cultivating future talent. Together, we can ensure that technological progress and environmental stewardship grow hand in hand.

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WTB9L-3N2491

The WTB9L-3N2491 is a compact background-suppression photoelectric proximity sensor featuring a precise red laser light source. It delivers reliable detection of small objects over short to medium ranges, housed within a rugged VISTAL® enclosure with high protection ratings—designed for demanding industrial environments.

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Parameters
Parameter Specification
Sensor type Photoelectric proximity sensor, background suppression
Sensing range 25 mm … 400 mm
Light source Visible red laser (Class 2), λ = 650 nm
Light spot size Ø 0.9 mm at ~230 mm
Supply voltage 10 … 30 V DC, ripple < 5 Vpp
Current consumption Approx. 30 mA (no load)
Output type NPN, complementary light/dark switching
Max. output current ≤ 100 mA
Response time ≤ 1 ms
Switching frequency 500 Hz
Adjustment 5-turn potentiometer
Connection M12, 4-pin male connector
Housing material VISTAL® plastic; optics in PMMA
Dimensions (W×H×D) 12.2 mm × 52.2 mm × 23.6 mm
Protection rating IP66, IP67, IP69K
Ambient operating temp –10 °C … +50 °C (up to –30 °C…+55 °C extended)
Storage temperature –30 °C … +70 °C
Weight Approx. 13 g
Certifications UL listed
Special feature Detects small objects with high precision and rugged interference suppression