Key Parameters
Parameter Specification
Product Type Multi-technology Slot Sensor (Photoelectric + Inductive)
Order Code WSE4SL-3P3237
Sensing Principles 1. Photoelectric Through-Beam
2. Inductive
Slot Width 4 mm
Sensing Range (Inductive) 2 mm (for metal actuator detection)
Light Source Infrared light (typically 880 nm)
Adjustment Teach-In button (for setting photoelectric sensitivity)
Output Type Dual, independent PNP switching outputs
Output Configuration Output 1 (Photoelectric): Light/Dark ON switchable
Output 2 (Inductive):
Supply Voltage 10 - 30 V DC
Current Consumption max. 100 mA (without load)
Switching Current max. 100 mA (per output)
Connection Type M12, 5-pin quick-disconnect connector
Pinout (Typical) Pin 1: +V (L+)
Pin 2: Output 2 (Inductive)
Pin 3: Output 1 (Photoelectric)
Pin 4: Teach / Function
Pin 5: 0V (L-)
Housing Material Stainless Steel
Protection Rating IP67
Indicator LEDs Yellow: Output 1 Status
Yellow: Output 2 Status
Green: Power
Operating Temperature -30 °C to +60 °C
Approvals / Certifications CE, cULus
Functional Features
Dual-Technology Design: Integrates photoelectric and inductive sensing in one device, saving space and cost.

Precise Edge Detection: The photoelectric through-beam accurately detects the edge of various materials.

Metal Actuor Detection: The inductive sensor reliably detects the presence of a metal target for position verification.

Teach-In Configuration: Allows for simple, one-button setup to adapt to different material colors and transparencies.

Selectable Logic: The photoelectric output can typically be configured for Light-ON or Dark-ON operation via the teach function.

Rugged Stainless Steel Housing: Highly resistant to corrosion, impacts, and chemicals, ideal for food, beverage, and pharmaceutical applications.

Typical Applications
Packaging Machinery: Precise edge detection of film, paper, or foil for cutting, sealing, and registration mark control.

Labeling Machines: Detecting the leading edge of a label on a backing paper.

Printing Industry: Web guiding and edge detection of continuous materials.

Assembly Automation: Verifying the presence of a metal part and a non-metallic material simultaneously.

Door or Cover Positioning: Using the inductive channel to detect a "home" position and the photoelectric channel to detect an obstruction.