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SICK WL280-2H4331 — Photoelectric Sensors

SICK WL280-2H4331 Photoelectric Retro-Reflective Sensor, 15

MPNWL280-2H4331

SICK W280-2H series, WL280-2H4331 photoelectric retro-reflective sensor, change-over relay output, 15 m range, 24-240 V supply, 2 m cable, IP66/IP67.

$76.20 – $142.32Ref. price · indicative, final on quote
SICK WL280-2H4331 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

WL280-2H4331 — Identification
ParameterValue
SeriesW280-2H
Sensor typePhotoelectric Retro-Reflective Sensor
WL280-2H4331 — Sensing
ParameterValue
Sensing distance, max.15 m
Sensing distance, min.10 mm
Response time15 ms
Light typeLED, Visible Red Light
WL280-2H4331 — Electrical
ParameterValue
Operating voltage, min.24 V
Operating voltage, max.240 V
WL280-2H4331 — Output
ParameterValue
Output typeChange-Over Contact (CO)
Switching typeLight / Dark ON
WL280-2H4331 — Connection
ParameterValue
Termination typeCable, 2 m
WL280-2H4331 — Environmental
ParameterValue
Protection rating (IP)IP66;IP67
Operating temperature, min.-25 °C
Operating temperature, max.55 °C
WL280-2H4331 — Mechanical
ParameterValue
Length63 mm
Width23.5 mm
Height78 mm

Product details

SICK WL280-2H4331 — Retro-Reflective Photoelectric Sensor, 15 m Range, Relay Output

The SICK WL280-2H4331 is a retro-reflective photoelectric sensor with a 15 m sensing range using visible red LED light. The change-over relay output switches up to 240 V. Supply is universal 24-240 V AC/DC. Response time is 15 ms. The IP66 and IP67 ratings allow washdown environments and temporary submersion.

Integration — DIN Footprint, Cable Termination, Washdown Sealing

The housing measures 23.5 mm wide × 78 mm high × 63 mm deep. The 2 m cable termination is fixed. The IP66/IP67 seal means the sensor body and lens withstand direct hose spray and temporary immersion — but the cable gland and the reflector mounting must also be rated for the same environment. Use a stainless-steel reflector bracket in washdown zones; the plastic bracket may degrade over time with caustic cleaners.

Frequently asked questions

What is the closest functional second-source to WL280-2H4331?

The closest functional peer is the WL280-2P2431, which shares the same 15 m retro-reflective optics, W280 housing width (23.5 mm), and IP66/IP67 rating. Key differences: the 2P2431 uses a PNP transistor output (100 mA max) and operates on 10-30 V DC only, versus the 2H4331's change-over relay output and universal 24-240 V AC/DC supply. The 2P2431 also has a much faster 500 µs response time and an M12 connector instead of a 2 m cable. Panel cutout is identical, so swapping between them requires checking supply voltage and output type.

Will WL280-2H4331 drop into a panel specified around WL280-2P2431 without rewiring?

Mechanically yes — same 23.5 mm width and W280 footprint. Electrically no: the 2H4331 runs on 24-240 V AC/DC with a relay output, while the 2P2431 needs 10-30 V DC and a PNP input. You'd need to rewire the supply and confirm the PLC input card accepts a dry relay contact instead of a PNP signal.

MPN
WL280-2H4331