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Small rectangular plastic photoelectric sensor with M12 connector

Sick

Sick WTB9-3P2411S14 photoelectric sensor PNP

SKU CH-YQW5-1G96X

Compact photoelectric sensor with background suppression detects objects up to 800 mm using infrared light and a PNP complementary output

  • Background suppression enables reliable detection up to 800 mm
  • Infrared LED at 850 nm provides consistent sensing in varied lighting
  • PNP complementary output with light/dark switching suits diverse control logic
  • IP66, IP67 and IP69K ratings withstand harsh wash-down environments
  • Compact 12.2 x 52.2 x 23.6 mm housing fits tight mounting spaces

Sick WTB9-3P2411S14 photoelectric sensor

The Sick WTB9-3P2411S14 is a compact photoelectric proximity sensor designed for industrial automation tasks. It uses background suppression to detect objects reliably across varying surface colours and textures. The rectangular housing measures 12.2 mm by 52.2 mm by 23.6 mm and weighs 13 g. It suits engineers and technicians integrating presence detection into conveyors, packaging lines or robotic cells.

PNP complementary output with 100 mA capacity

The sensor provides a PNP switching output with complementary light and dark switching functions. Maximum output current is 100 mA, supporting direct connection to PLC inputs or relay coils. Response time is under 2.5 ms at a switching frequency of 200 Hz. Supply voltage ranges from 10 V DC to 30 V DC with ripple below 5 Vpp and power consumption of 30 mA.

M12 connector and IP69K enclosure for harsh

Connection is via a 4-pin M12 male connector, simplifying installation in standard sensor cabling systems. The VISTAL plastic housing and PMMA optics meet IP66, IP67 and IP69K enclosure ratings, resisting high-pressure washdown and dust ingress. Operating temperature spans -40 °C to +60 °C, with storage down to -40 °C and up to +75 °C. Mounting uses M3 holes for secure fixing.

Highlights

  • Background suppression enables reliable detection up to 800 mm
  • Infrared LED at 850 nm provides consistent sensing in varied lighting
  • PNP complementary output with light/dark switching suits diverse control logic
  • IP66, IP67 and IP69K ratings withstand harsh wash-down environments
  • Compact 12.2 x 52.2 x 23.6 mm housing fits tight mounting spaces

Specifications

BrandSICK
ModelSICK WTB9-3P2411S14

Questions about this item

How far can the sensor reliably detect objects in a typical installation?

The sensing range is 20 mm to 400 mm with background suppression, using an infrared LED at 850 nm and a 40 mm light spot at 400 mm distance.

What voltage and output type does the sensor need from the control system?

It operates on 10 V DC to 30 V DC, provides a PNP complementary output with light/dark switching, and can drive up to 100 mA at 200 Hz switching frequency.

What mounting holes and connector does the housing require?

The rectangular VISTAL housing uses M3 mounting holes, measures 12.2 mm x 52.2 mm x 23.6 mm, and connects via a 4-pin M12 male connector.

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