RS PRO Retroreflective Photoelectric Sensor, Block Sensor, 150 mm → 10 m, PNP, IP66, IP67, IP69K

SICK WL11-2 Series Photoelectric Sensor, IP66/IP67/IP69K, 30V Maximum DC Voltage - WL11-2P2430F38

This photoelectric sensor is a retro‑reflective LED detector designed for industrial automation and sensing tasks. It monitors object presence by detecting reflected visible red light and is intended for use where robust environmental protection and Compact block‑style mounting are required. The device connects via a 4‑pin M12 Interface and operates from a 10V DC–30V DC supply, making it suitable for integration into control systems and machine sensing loops.

Features & Benefits

• Response time 2.5ms for Rapid object detection
  PNP output with complementary switching for simple interfacing
  Rated IP66, IP67, IP69K for harsh and wash‑down environments
  Operating temperature to +60°C for high‑temperature installations
  Output current up to 100mA to drive typical control inputs

**Applications**

• Suitable for conveyor object detection in food processing lines
  Ideal for reflector‑based presence sensing on packaging machines
  Used with PLC inputs requiring PNP switching and fast response
  Can be used in wash‑down environments needing IP69K protection
  Used for pick‑and‑place verification in robotic cells

What connector options are available for wiring?

The unit uses a male 4‑pin M12 connector for straightforward plug‑in connection to sensor actuators and cable assemblies.

How does light Wavelength affect detection performance?

The emitter uses 640nm visible red light, which provides consistent performance with common retro‑reflectors and maintains a defined spot size at distance.

What protection mechanisms exist for electrical faults?

The device includes reverse‑polarity protection, interference suppression and output over‑current/short‑circuit protection for robust operation on industrial supplies.

How is the sensing range established in practice?

Range depends on reflector type
with a standard reflector the sensor detects from 0.15m up to 8–10 m depending on the reflector used.