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Rectangular plastic sensor with red LED lens and M12 connector

Sick

Sick WL250-2P2431 Photoelectric Retro-reflective Sensor PNP

SKU CH-2GT0-ZEX14

Detects objects up to 15 m with visible red light, PNP output, IP67 housing, and includes reflector plus bracket

  • Retro-reflective detection up to 15 m sensing range
  • Visible red LED with 2° dispersion for precise alignment
  • PNP light/dark switching selectable via control cable
  • IP67-rated ABS housing withstands –25 °C to +55 °C
  • M12 4-pin connector with 100 mA output current

Sick WL250-2P2431 retro-reflective sensor

The Sick WL250-2P2431 is a photoelectric retro-reflective sensor with dual lens optics and a PNP switching output. It operates on a 10 V DC to 30 V DC supply and detects objects up to 15 m using visible red light. The rectangular ABS housing measures 20 mm x 65 mm x 43.9 mm and weighs 40 g. An IP67 enclosure rating protects against dust and temporary immersion.

Upgrades from basic through-beam or diffuse sensors

This sensor replaces simpler through-beam pairs or diffuse units when a single-device installation with a separate reflector is preferred. The jump is worth it for applications needing a sensing range up to 13 m with a visible light spot for easy alignment. The potentiometer allows 2-turn sensitivity adjustment and the L/D control cable selects light or dark switching. Switching frequency reaches 1,000 Hz with a 0.5 ms response time.

Check supply voltage and mounting before ordering

Verify your control system provides 10 V DC to 30 V DC and accepts a PNP output with a maximum 100 mA load. Confirm the M12 4-pin male connector matches your cable assembly. The operating temperature range spans –25 °C to +55 °C. The package includes a P250 reflector and a BEF-W250 mounting bracket for immediate installation.

How it compares

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Price $64.99
Cheaper than about 72% of the 5,006 comparable items (median $95.99).

Specifications

Product
Brand nameSICK
Model nameSICK WL250-2P2431

Questions about this item

What are the dimensions of the WL250-2P2431 housing and which mounting bracket is included?

The rectangular housing measures 20 mm wide, 65 mm high and 43.9 mm deep and the package includes a BEF-W250 mounting bracket for installation.

How is the WL250-2P2431 wired and what is the common mistake with the L/D control cable?

It connects via a 4-pin M12 male connector on a 10–30 V DC supply; the frequent error is leaving the L/D control cable floating instead of tying it to 0 V or +V to select light or dark switching.

Which reflector is supplied and when should it be cleaned or replaced?

A P250 reflector is included; clean it when dust or moisture reduces the 15 m maximum range, and replace it if the reflective surface becomes scratched or discoloured.

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