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Rectangular plastic sensor housing with M12 connector

Sick

Sick WL27-3P2451 Photoelectric Retro-reflective Sensor PNP

SKU CH-FFF8-BVZAX

A photoelectric retro-reflective sensor with PNP complementary output detects objects up to 15 m using visible red light in a compact IP69K-rated ABS housing

  • Retro-reflective sensing up to 15 m range
  • Visible red LED at 660 nm wavelength
  • PNP complementary output with 1,000 Hz switching
  • IP69K enclosure for harsh environments
  • Operates from –40 °C to +60 °C

Compact Retro-Reflective Sensor

The SICK WL27-3P2451 is a photoelectric retro-reflective sensor with dual-lens optics in a rectangular ABS housing. It operates on 10 V DC to 30 V DC supply voltage and provides a PNP complementary switching output. The IP69K enclosure rating suits harsh industrial environments.

Upgrade From Basic Proximity Switches

This sensor replaces simple inductive or capacitive switches when detection ranges up to 15 m are required. The visible red LED light source at 660 nm wavelength creates a 220 mm light spot at 10 m distance. The jump is worth it for applications needing non-contact detection of transparent or shiny objects across longer gaps.

Straightforward M12 Integration

Connection uses a standard male M12 4-pin connector for quick wiring into existing control cabinets. Potentiometer adjustment sets the switching threshold without software tools. Ensure the reflector is aligned within the 1.5° dispersion angle and the supply ripple stays below 5 Vpp to avoid false triggering.

Highlights

  • Retro-reflective sensing up to 15 m range
  • Visible red LED at 660 nm wavelength
  • PNP complementary output with 1,000 Hz switching
  • IP69K enclosure for harsh environments
  • Operates from –40 °C to +60 °C

Specifications

BrandSICK
ModelSICK WL27-3P2451

Questions about this item

What are the physical dimensions of the Sick WL27-3P2451 sensor housing?

The rectangular housing measures 24.6 mm wide, 80.6 mm high and 54 mm deep, weighing 100 g.

How is the sensor connected and what supply voltage is required?

It connects via a 4-pin M12 male connector and operates on 10 V DC to 30 V DC with a maximum ripple of 5 Vpp.

What is the enclosure rating and operating temperature range for long-term use?

The sensor meets IP69K and operates from –40 °C to +60 °C, with storage up to +75 °C.

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