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Rectangular plastic photoelectric sensor with dual lens and cable gland, 23.5 by 74.5 by 63 mm

Sick

Sick WL280-2R4331 Photoelectric Retro-reflective Sensor

SKU CH-XBBH-46D3N

Detects objects up to 15 m using visible red light with a relay change-over output and IP66/IP67 housing

  • Detects objects up to 15 m with retro-reflective sensing
  • Operates on 24 V to 240 V AC or DC supply
  • Relay output handles 3 A at 240 V AC or 30 V DC
  • IP66 and IP67 enclosure resists dust and water ingress
  • Compact 23.5 mm x 74.5 mm x 63 mm housing fits tight spaces

Industrial Retro-Reflective Sensor

The Sick WL280-2R4331 is a photoelectric retro-reflective sensor built for industrial detection tasks. It uses visible red light and a dual-lens design to sense objects across a maximum range of 15 m. The rectangular ABS housing suits mounting on machinery or conveyors where reliable presence detection is required.

Thermals Noise And Power Draw

The unit operates from 24 V to 240 V on either AC or DC supply with a power consumption of 5 VA. A relay output with change-over contacts switches up to 3 A at 240 V AC or 30 V DC. Response time is 15 ms at a switching frequency of 33 Hz. The IP66 and IP67 rated enclosure protects internals from dust and water ingress across an operating range of –25 °C to +55 °C.

Bundled Mounting Bracket And Reflector

Supplied accessories include the BEF-W280 mounting bracket and a P250 reflector. These items allow immediate installation and alignment without sourcing separate parts. The potentiometer adjustment lets installers fine-tune the sensing threshold on site. The sensor meets EN 60947-5-2 EMC standards and EN 61000-6-3 emission requirements for industrial environments.

Highlights

  • Detects objects up to 15 m with retro-reflective sensing
  • Operates on 24 V to 240 V AC or DC supply
  • Relay output handles 3 A at 240 V AC or 30 V DC
  • IP66 and IP67 enclosure resists dust and water ingress
  • Compact 23.5 mm x 74.5 mm x 63 mm housing fits tight spaces

Specifications

BrandSICK
ModelSICK WL280-2R4331

Questions about this item

How do I install the WL280-2R4331 sensor and which step is commonly missed?

Mount the sensor using the supplied BEF-W280 bracket, connect the cable through the cable gland to a 24 V...240 V AC/DC supply, and align the visible red light spot (Ø 260 mm at 8 m) with the included P250 reflector; the step often missed is verifying the potentiometer setting for the required 0.01 m...13 m sensing range.

What maintenance or replacement will the WL280-2R4331 need over time?

The relay output is rated for AC-15 and DC-13 usage categories; plan to replace the sensor when the change-over contacts reach their electrical life limit, and periodically clean the PMMA optics and ABS housing to maintain the IP66/IP67 seal.

What limit appears first during continuous operation of the WL280-2R4331?

The 33 Hz switching frequency caps the maximum detection rate, so sustained high-speed cycling will hit this limit before the 15 ms response time or the 3 A (240 V AC / 30 V DC) contact rating becomes a constraint.

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