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Cylindrical nickel-plated brass sensor, M18 thread, 78 mm long, M12 connector, IP67 rating

Sick

Sick VL18-3P3240 photoelectric retro-reflective sensor PNP

SKU CH-ARM8-G5EQ4

A cylindrical photoelectric retro-reflective sensor with M18×1 thread, 10–30 V DC supply, PNP dark-switching output, 0.05–3.7 m sensing range, and IP67-rated nickel-plated brass housing

  • Retro-reflective sensing up to 3.7 m range
  • PNP dark-switching output with 100 mA capacity
  • M12 4-pin connector for quick installation
  • IP67 nickel-plated brass housing withstands harsh environments
  • 250 Hz switching frequency suits fast automation cycles

Sensor type and target use

The Sick VL18-3P3240 is a cylindrical photoelectric retro-reflective sensor with a PNP dark-switching output. It suits automation tasks that need a visible red LED beam and a metal M18 housing rated IP67.

Practical limits of the sensing interface

The sensor detects objects from 0.05 m to 3.7 m, with a specified sensing range of 0.05 m to 3 m. The light spot reaches Ø 150 mm at 3 m and the beam disperses approximately 2.8°. Response time is 2 ms giving a 250 Hz switching frequency.

Checks before ordering

Verify your control system accepts a 10 V DC to 30 V DC supply with PNP dark-switching logic and can connect to a 4-pin M12 male connector. Confirm the operating envelope of –25 °C to +70 °C and the 100 mA maximum output current meet the application requirements.

How it compares

Measured against everything we stock in Electrical Trade Tools & Kits, at today’s prices. Recalculated every night.

Price $82.99
Cheaper than about 59% of the 5,006 comparable items (median $95.99).

Specifications

Product
Brand nameSick
Model nameSICK VL18-3P3240

Questions about this item

How do I choose between the 3 m and 3.7 m sensing ranges?

Use the 3 m figure for reliable detection with standard reflectors; the 3.7 m maximum applies only under ideal conditions with high-quality reflectors.

What does the 250 Hz switching frequency mean on a conveyor line?

The sensor can change state up to 250 times per second, so it reliably detects objects spaced as close as 4 ms apart at line speed.

What does the M12 4-pin connector cap in practice?

The M12 4-pin connector carries 10–30 V DC supply and the PNP dark-switching output up to 100 mA, limiting cable length to standard industrial runs.

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