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Rectangular plastic sensor housing with M12 connector and potentiometer adjustment

Sick

Sick WTB11-2P2431 Photoelectric Proximity Sensor PNP

SKU CH-A0TM-5FPWR

Photoelectric proximity sensor with background suppression, 20 mm to 350 mm sensing range, visible red LED, PNP complementary output, M12 connector, IP66/IP67/IP69K rated

  • Background suppression detects objects reliably up to 350 mm
  • Visible red LED at 640 nm provides clear spot at 200 mm
  • PNP complementary output switches at 200 Hz with 2.5 ms response
  • IP66 IP67 IP69K enclosure withstands harsh wash-down environments
  • Compact 15.6 x 48.5 x 42 mm ABS housing fits tight spaces

Industrial Photoelectric Sensor PNP

The Sick WTB11-2P2431 is a rectangular photoelectric proximity sensor with background suppression for precise object detection in automation. It operates on 10 V DC to 30 V DC supply voltage and delivers a PNP complementary switching output suitable for industrial control systems.

Potentiometer Adjustment and M12 Connector

A 5-turn potentiometer allows fine tuning of the sensing range between 20 mm and 350 mm without tools. The 4-pin male M12 connector provides a standardised, tool-free electrical interface that simplifies installation and replacement on the production line.

ABS Housing with IP66 IP67 IP69K Rating

The plastic ABS housing and PMMA optics weigh 120 g and measure 15.6 mm x 48.5 mm x 42 mm for mounting in confined spaces. Enclosure ratings IP66, IP67 and IP69K protect against high-pressure washdown, dust and temporary immersion in harsh environments.

Highlights

  • Background suppression detects objects reliably up to 350 mm
  • Visible red LED at 640 nm provides clear spot at 200 mm
  • PNP complementary output switches at 200 Hz with 2.5 ms response
  • IP66 IP67 IP69K enclosure withstands harsh wash-down environments
  • Compact 15.6 x 48.5 x 42 mm ABS housing fits tight spaces

Specifications

BrandSICK
ModelSICK WTB11-2P2431

Questions about this item

Will the potentiometer adjustment drift over time and need recalibration?

The sensor uses a 5‑turn potentiometer for background suppression; mechanical potentiometers can shift with vibration or temperature cycling, so periodic verification of the sensing range is recommended.

At the 200 Hz switching frequency what limits continuous operation?

The 2.5 ms response time and 200 Hz maximum switching frequency set the speed ceiling; sustained operation at that rate is supported within the 10–30 V DC supply range and 100 mA output current limit.

Does the ABS housing stay cool enough when the sensor runs all day at 30 mA?

Power consumption is 30 mA from a 10–30 V DC supply; the ABS/PMMA housing is rated IP66, IP67 and IP69K and operates in ambient temperatures from –30 °C to +60 °C, so heat buildup under normal load stays within specification.

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