We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Small rectangular photoelectric sensor, grey plastic housing, M12 4-pin connector visible

Sick

Sick WL18-3P430 Photoelectric Sensor PNP 10-30 V DC 4-pin M12

SKU CH-0WNM-6F1N8

Compact photoelectric retro-reflective sensor with PNP complementary output, 10–30 V DC supply, 0–7 m sensing range and IP67-rated ABS housing

  • Retro-reflective sensing up to 7 m with visible red LED
  • Compact 17.6 × 75.5 × 33.5 mm ABS housing fits tight spaces
  • PNP complementary output switches at 1,000 Hz for fast response
  • IP67 enclosure withstands –40 °C to +60 °C operating range
  • 4-pin M12 connector simplifies wiring on 10–30 V DC supply

Industrial Photoelectric Retro-Reflective Sensor

The Sick WL18-3P430 is a compact photoelectric retro-reflective sensor with autocollimation designed for industrial detection tasks. Its rectangular ABS housing measures 17.6 mm by 75.5 mm by 33.5 mm and weighs 40 g. It operates on a 10 V DC to 30 V DC supply with a maximum power consumption of 40 mA.

Sensing Range Up to 7 Metres

The sensor detects objects from 0 m to a maximum of 7 m using a visible red LED light source at 645 nm. The light spot reaches approximately Ø 40 mm at a 2 m distance with a 1.8° dispersion angle. Sensitivity is adjusted via a single-turn potentiometer for precise setup.

PNP Complementary Output with M12 Connector

This unit suits automation systems requiring a PNP complementary output with light/dark switching and a 4-pin M12 male connector. It delivers a switching frequency of 1,000 Hz and a response time under 500 µs. Builders needing NPN output, a different connector type, or a through-beam sensing principle should consider alternative sensor models.

How it compares

Measured against everything we stock in Electrical Trade Tools & Kits, at today’s prices. Recalculated every night.

Price $168.99
Pricier than about 72% of the 5,006 comparable items (median $95.99).

Specifications

Product
Brand nameSICK
Model nameSICK WL18-3P430

Questions about this item

How far can the sensor reliably detect a reflector in a typical installation?

The rated sensing range is 0 m to 5 m with a standard reflector; the maximum possible range reaches 7 m under ideal conditions.

What does the PNP complementary output mean for wiring into a PLC input card?

The sensor provides both light-switching and dark-switching PNP signals on the 4-pin M12 connector, sourcing up to 100 mA at 10–30 V DC.

Will the 17.6 mm wide housing fit on a standard DIN-rail bracket or tight machine frame?

The rectangular ABS housing measures 17.6 mm wide, 75.5 mm high and 33.5 mm deep, with an IP67 rating and a 4-pin M12 connector for compact mounting.

More in Electrical Trade Tools & Kits

Similar items