SICK Retroreflective Photoelectric Sensor, Block Sensor, 7 m, PNP, IP69K, IP67, IP66

SICK W12-3 Series Photoelectric Sensor, IP69K Rating, 30V Maximum DC Voltage - WL12-3P2441

This photoelectric sensor is a Compact retroreflective detector designed for industrial automation environments. It detects objects using a visible red LED beam and is intended for mounting where reliable presence detection and switching are required. The device connects via an M12 4-pin male connector and provides a PNP complementary output for integration with control systems.

Features & Benefits

• 330μs response time for Rapid detection in high-speed lines
  Operates from 10V DC to 30V DC for flexible supply integration
  Output current up to 100mA to drive typical input circuits
  IP66 IP67 IP69K ingress protection for washdown and harsh areas
  Ambient range −40°C to +60°C for extended temperature duty
  Light/dark switching with potentiometer adjustment for adaptable sensing

**Applications**

• Suitable for conveyor object detection in food plants requiring washdown ratings
  Ideal for presence sensing of parts on assembly machinery
  Used with retroreflectors for long-range part detection up to 5m
  Can be used for material handling systems needing fast switching rates
  Used for end-of-line verification where Compact rectangular sensors fit tight spaces

How is sensitivity adjusted on the unit?

Sensitivity is set via a five-turn potentiometer on the housing to fine-tune switching thresholds.

What optical performance can I expect at mid ranges?

The red LED has a typical beam dispersion of about 1.5° and produces a 100mm spot at 3M with matching reflectors.

How is the sensor protected against electrical faults?

The electronics include reverse-polarity protection, interference suppression, and outputs protected against overcurrent and short-circuit conditions.

Notes

Product details cover the whole product family. For details on the specifications for this individual product, please refer to the datasheet.