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Small rectangular photoelectric sensor with red PinPoint LED and M12 connector

Sick

SICK WL9-3P2430 Photoelectric Sensor PNP 10-30 V DC 4 m Range IP69K

SKU CH-4ACR-1RH3K

Compact photoelectric retro-reflective sensor with 4 m maximum range, PNP output, IP69K enclosure and 10–30 V DC supply

  • PNP output simplifies wiring with 10–30 V DC supply
  • 4 m sensing range detects objects at distance
  • IP69K enclosure withstands high-pressure wash-down
  • Compact 12.2 × 52.2 × 23.6 mm housing fits tight spaces
  • Visible red PinPoint LED eases alignment at 1.5 m

SICK WL9-3P2430 photoelectric sensor

The SICK WL9-3P2430 is a compact photoelectric retro-reflective sensor with autocollimation for industrial detection tasks. It operates on 10 V DC to 30 V DC and provides a PNP complementary switching output with light/dark switching. The PinPoint LED emits visible red light at 650 nm with a 45 mm spot at 1.5 m. Rated IP66, IP67 and IP69K, it suits harsh environments from –40 °C to +60 °C.

M12 connector and M3 mounting simplify installation

Connection uses a male M12 4-pin connector for quick wiring. The rectangular VISTAL housing measures 12.2 mm x 52.2 mm x 23.6 mm and weighs 13 g, fitting tight spaces with a single M3 mounting hole. No potentiometer or teach-in adjustment is present, so alignment must be precise. The polarisation filter helps reject false triggers from shiny surfaces, but reflective backgrounds within the 4 m maximum range can still cause unwanted switching.

Check voltage, output logic

Verify your supply stays within 10 V DC to 30 V DC with under 5 Vpp ripple and that the load does not exceed 100 mA. Confirm the controller accepts a PNP complementary output with light/dark switching at up to 1,000 Hz. A suitable corner-cube reflector is required for the 2.5 m sensing range; without it the sensor will not detect. Ensure the M12 cable pinout matches the sensor’s assignment.

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Price $70.99
Cheaper than about 69% of the 5,006 comparable items (median $95.99).

Specifications

Product
Brand nameSICK
Model nameSICK WL9-3P2430

Questions about this item

How can I verify the WL9-3P2430 is operating correctly after installation?

Align the sensor with its reflector so the visible red PinPoint LED spot hits the target; the complementary PNP output will toggle at up to 1,000 Hz with a response time under 0.5 ms, confirming light/dark switching works.

What comes in the box with the WL9-3P2430 and what must I source separately?

The sensor housing with M12 4-pin male connector is supplied; you must provide a compatible M12 4-pin cable, a 10–30 V DC power supply, and a suitable reflector for the 4 m maximum range.

Which sensing-range version of the WL9-3P2430 should I choose for my application?

This model offers a maximum sensing range of 0–4 m and a specified operating range of 0–2.5 m; select it when your target distance falls within 2.5 m for reliable detection.

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