SICK WL4SL-3F2234 Retro-Reflective Sensor (1061562)

The SICK WL4SL-3F2234 is a high-performance photoelectric retro-reflective sensor with autocollimation optics, designed for the precise detection of small objects across long distances, even without a reflector.

Utilizing a visible red laser beam, this compact, slim-form sensor is ideal for applications requiring pinpoint accuracy in challenging automation and manufacturing environments.

Technical Specifications

Model: WL4SL-3F2234 SICK
SICK Part Number: SICK 1061562
Product Type: Photoelectric retro-reflective sensor
Application: Detection of small objects with high precision over long distances
Sensing Range: 0 m to 8 m (up to 12 m max.)
Adjustment: Teach-in button via cable
Focus Angle: Coaxial optics (autocollimation)
Light Type: Visible red laser
Light Source: Laser Class 1 (650 nm)
Light Spot Size: Ø 1 mm at 500 mm
Housing Style: Slim rectangular with M3 mounting holes
Functional Principle: Retro-reflective with polarization filter (autocollimation)

Electrical Interface

Supply Voltage: 10 V DC to 30 V DC
Ripple: < 5 Vpp
Current Consumption: 30 mA (typical)
Switching Output Type: PNP
Switching Mode: Dark switching
Output Current Max.: ≤ 100 mA
Response Time: ≤ 0.5 ms
Switching Frequency: 1,000 Hz
Connection Type: M8 connector, 4-pin
Circuit Protection:

• A: Short-circuit protected
• B: Reverse polarity protected
• C: Power-up pulse suppression
  Protection Class: III

Mechanical Data

Enclosure Rating: Not explicitly stated (W4 series typically IP67)
Housing Material: Plastic (Novodur)
Front Screen: PMMA (acrylic)
Dimensions (W x H x D): 12.2 mm x 41.8 mm x 17.3 mm
Weight: 100 g

Safety-Related Data

MTTFD (Mean Time to Dangerous Failure): 616 years
DCavg: 0%
Mission Time (TM): 10 years

Ambient Conditions

Operating Temperature: Not specified (typically –25 °C to +55 °C for W4 series)
Storage Temperature: Not specified

Certificates and Compliance

• European Conformity (CE)
• ECOLAB Certified
• cULUS Listed
• Compliant with EN 60825-1:2014 and IEC 60825-1:2014 (Laser Class 1)

Applications

Ideal For:

• High-speed packaging lines
• Precision object detection on conveyors
• Small part detection in electronics assembly
• Detection through clear objects or windows

Key Features & Benefits

✅ Laser Precision: Sharp 1 mm red spot enables detection of small, fast-moving parts.

✅ Long Range Detection: Up to 12 m with autocollimation optics.

✅ Slim Housing: Compact 12.2 mm width fits tight machine spaces.

✅ Plug & Play Setup: Quick teach-in via single button and cable.

✅ High-Speed Response: 0.5 ms switching for rapid detection tasks.

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Detect with laser focus. Automate with confidence — with SICK and Drive Outlet Megastore.