SICK VL18L-4P324 Retro-Reflective Laser Sensor (6027430)
The SICK VL18L-4P324 is a precision photoelectric retro-reflective sensor featuring a laser light source and dual-lens system for small object detection at long distances. With a rugged M18 nickel-plated brass housing, IP67 sealing, and fast 800 Hz switching, it is ideally suited for high-accuracy automation, material handling, and detection tasks in tight industrial environments.
Technical Specifications
Model: VL18L-4P324
Part No.: SICK 6027430
Product Type: Photoelectric Retro-Reflective Sensor
Operating Principle: Retro-reflective with minimum distance to reflector (dual-lens system)
Application: Accurate detection of small and low-reflectivity objects
Optical Performance
Sensing Range: 0.1 m to 30 m (operating), up to 35 m (maximum)
Light Source: Laser diode, visible red light
Wavelength: 650 nm
Laser Class: Class 1 (IEC 60825-1)
Laser Power Output: 0.4 mW
Light Spot Size (at 35 m): Ø 9 mm
Angle of Dispersion: 0.04°
Focus: 0.04° narrow beam for precision targeting
Optical Axis: Axial
Adjustment Interface: Single teach-in button or control wire (sensitivity adjustment)
Special Feature: Polarisation filter for reliable detection of shiny or mirrored surfaces
Electrical Interface
Supply Voltage (UB): 10 V DC to 30 V DC
Ripple: ±10%
Current Consumption: 20 mA
Switching Output: PNP
Switching Mode: Light/dark switching (selectable via control input)
Max Output Current (Imax): ≤ 100 mA
Response Time: ≤ 0.625 ms
Switching Frequency: 800 Hz
Connection Type: M12 male connector, 4-pin
Protection Class: III
Circuit Protection:
- A: Reverse polarity protection
- B: Short-circuit protection
- C: Overvoltage protection
- D: Output overload protection
Mechanical Data
Enclosure Rating: IP67
Housing Design: Cylindrical (M18 x 1 thread)
Housing Material: Nickel-plated brass with PC components
Optics Material: Plastic (PC) with protective glass pane
Dimensions (W x H x D): 18 mm × 18 mm × 97.7 mm
Weight: Approx. 60 g
Environmental Conditions
Operating Temperature: –15 °C to +55 °C
Storage Temperature: –25 °C to +70 °C
UL File Number: NRKH.E181493
Laser Certification: CDRH-conform (0312012-00)
Certificates and Compliance
- European Conformity (CE)
- UKCA Compliant
- cULus Listed
- RoHS Compliant
Applications
Ideal For:
- Detection of small or fast-moving objects on conveyors
- Precision retro-reflective sensing in space-constrained installations
- Packaging, printing, and bottling lines
- Positioning tasks with narrow detection areas
- Applications requiring rugged M18 threaded housings
Key Features & Benefits
✅ Long-Range Laser Sensing: Up to 35 m with focused beam and reflective tape.
✅ Fast Response Time: 0.625 ms and 800 Hz switching frequency for rapid detection.
✅ Compact and Rugged: M18 metal housing for industrial durability.
✅ Simple Setup: Single-button teach-in and external control wire adjustment.
✅ Reliable Detection: Polarisation filter ensures accuracy even on reflective surfaces.
Order Today for Fast UK & Europe Delivery!
At Drive Outlet Megastore, we offer unbeatable SICK VL18L-4P324 prices and with fast dispatch across the UK and Europe.
Need help specifying a laser retro-reflective sensor for your system? Contact our expert team today!
Precision meets reliability — with SICK and Drive Outlet Megastore.

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