Technical Parameters
Parameter Value & Description
Product Family SICK Photoelectric Sensors
Series WSE9L
Model Number WSE9L-3P2237
Sensing Principle Diffuse Mode with Background Suppression (BGS)
Light Source Red light LED (650 nm)
Sensing Range Specific range to be confirmed by datasheet (e.g., 50mm to 300mm). The "3" in the model often indicates a standard range.
Adjustment Potentiometer or Teach-in (for setting the range)
Output Type PNP Normally-open (NO) switch (The P in 3P2237)
Connection M12 4-pin quick-disconnect connector
Supply Voltage 10...30 V DC
Switching Frequency High (e.g., 1.5 kHz typical for this series)
Environmental Protection IP67 (Dust-tight and protected against immersion in water)
Housing Material Metal
IO-Link Very likely version 1.1 (This is a key feature of the WSE9L series)
Function IO-Link for smart sensor capabilities

Typical Applications
This sensor is versatile and used wherever reliable detection independent of color and background is needed:

Packaging Machinery: Detecting packages on conveyors, ignoring the belt or machine structure behind them.

Automated Assembly: Verifying the presence of components in a fixture or assembly jig.

Material Handling: Detecting objects on pallets or elevators.

Robotics: Providing presence detection for grippers and end-effectors.

Food and Beverage: Detecting bottles, cans, or packages.