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Small red rectangular sensor with 2 m cable

Sick

Sick WL140-2N132 Photoelectric retro-reflective sensor NPN

SKU CH-1KFQ-NXK35

Photoelectric retro-reflective sensor detects objects up to 6.5 m with visible red LED, NPN output, IP67 housing and 2 m PVC cable

  • Labor warranty1 Year
  • Product typeTest Equipment
  • Color and finishRed
  • Number of items1 pack
  • Sold asBox
  • Parts warranty3 Years
  • Detects objects up to 6.5 m with visible red LED
  • NPN output switches in 0.5 ms for fast control signals
  • IP67 enclosure resists dust and water in harsh environments
  • Operates from 10 V DC to 30 V DC supply voltage
  • Compact 11 mm x 31 mm x 20 mm housing fits tight spaces

Industrial retro-reflective sensor

The Sick WL140-2N132 is a photoelectric retro-reflective sensor designed for industrial automation and detection tasks. It operates on a 10 V DC to 30 V DC supply voltage with an NPN switching output suitable for PLC inputs. The sensor uses visible red LED light at 680 nm wavelength for reliable object detection. It is built for electricians and maintenance engineers integrating presence sensing into machinery.

IP67 housing with fixed cable

The rectangular plastic housing measures 11 mm by 31 mm by 20 mm and carries an IP67 enclosure rating for dust and water protection. A 2 m PVC cable with 0.18 mm² conductors provides a permanent connection without separate connectors. The light/dark rotary switch allows mode selection during installation. Operating temperature spans –25 °C to +55 °C for harsh environments.

6.5 m maximum sensing range

The sensor detects objects from 0.01 m up to 6.5 m maximum range using a retro-reflective principle. Typical sensing range reaches 5 m with standard reflectors. Response time is 0.5 ms for high-speed applications. This range determines suitability for conveyor, packaging or access control applications.

How it compares

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

Price $126.99
Pricier than about 61% of the 5,006 comparable items (median $95.99).

Specifications

Product
Brand nameSick
Model nameSICK WL140-2N132
Product typeTest Equipment
Color and finishRed
In the box
Number of items1 pack

Questions about this item

What sensing range does the 680 nm red LED achieve with a reflector?

The sensor detects from 0.01 m up to 5 m with a reflector, and up to 6.5 m maximum range.

Will the 11 mm x 31 mm x 20 mm housing fit on a standard DIN rail bracket?

The rectangular PBT housing measures 11 mm wide, 31 mm high and 20 mm deep; it mounts directly with two through-holes, no DIN rail clip included.

How do I wire the NPN output on the 2 m PVC cable?

Connect brown to 10-30 V DC, blue to 0 V, and black to the load; then set the rotary switch for light or dark switching before powering up.

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