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Small rectangular metal photoelectric sensor with potentiometer adjustment and M12 connector

Sick

Sick WTB12-3P2411 Photoelectric Sensor PNP 20-600mm

SKU CH-KRB9-K2N3G

Compact photoelectric sensor with background suppression detects objects from 20 mm to 600 mm using infrared light and a PNP complementary output

  • Detects objects up to 600 mm with background suppression
  • PNP complementary output switches at 1,500 Hz for fast control
  • M12 4-pin connector enables quick installation
  • IP66, IP67 and IP69K ratings withstand harsh washdown environments
  • Operates from –40 °C to +60 °C for cold-store reliability

Compact Photoelectric Sensor for Industrial

The Sick WTB12-3P2411 is a rectangular photoelectric proximity sensor with background suppression designed for automated detection tasks. It operates on a 10 V DC to 30 V DC supply and delivers a complementary PNP switching output suitable for PLC integration. The housing measures 15.6 mm by 48.5 mm by 42 mm and weighs 120 g. An infrared LED at 850 nm provides a sensing range from 20 mm to 600 mm.

Verify Voltage, Connector

Confirm that your control system supplies 10 V DC to 30 V DC with a ripple below 5 Vpp to meet the sensor's power requirements. The unit connects via a male M12 4-pin connector, so ensure your cable assembly matches this interface. Two clamps with screws are included for mounting; check that the rectangular metal housing fits your available space. The potentiometer offers 5-turn adjustment for precise range setting.

Integrates Into 10–30 V DC Control Systems

The sensor fits into machines and conveyors requiring IP66, IP67 and IP69K protection against water and dust ingress. Its metal housing and PMMA optics withstand ambient temperatures from –40 °C to +60 °C during operation. A switching frequency of 1,500 Hz and a 330 µs response time support fast production cycles. The complementary light/dark switching output frees up logic by providing both states from a single device. Not suited for applications needing AC supply voltages or larger sensing distances beyond 600 mm.

Highlights

  • Detects objects up to 600 mm with background suppression
  • PNP complementary output switches at 1,500 Hz for fast control
  • M12 4-pin connector enables quick installation
  • IP66, IP67 and IP69K ratings withstand harsh washdown environments
  • Operates from –40 °C to +60 °C for cold-store reliability

Specifications

BrandSICK
ModelSICK WTB12-3P2411

Questions about this item

Does the SICK WTB12-3P2411 ship with a mounting bracket or do I need to buy one separately?

Two clamps with screws are included in the box for immediate mounting.

How do I choose between the listed sensing ranges for the WTB12-3P2411?

The sensor offers a single adjustable range of 20 mm to 600 mm set via a 5-turn potentiometer; no alternative range versions exist.

What does the 1,500 Hz switching frequency mean when the sensor is installed on a production line?

It allows the sensor to detect up to 1,500 objects per second with a 330 µs response time, suitable for high-speed sorting or counting.

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