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Cylindrical nickel-plated brass sensor M18 thread 75 mm long with M12 connector

Sick

Sick VL18-3F3340 photoelectric retro-reflective sensor PNP

SKU CH-S4EK-VQNFA

Photoelectric retro-reflective sensor with M18 cylindrical housing, PNP output, 0.05 m to 3.7 m range and IP67 enclosure

  • Detects objects up to 3.7 m away
  • Visible red LED spot 150 mm at 3 m
  • PNP light switching output 100 mA max
  • IP67 nickel-plated brass housing resists harsh environments
  • Operates from –25 °C to +70 °C on 10–30 V DC

Sensing range 0.05 m to 3.7 m

The Sick VL18-3F3340 is a cylindrical photoelectric retro-reflective sensor with an M18 thread. It operates on 10 V DC to 30 V DC supply voltage and provides a PNP light-switching output. The housing is nickel-plated brass with PMMA optics and meets IP67 enclosure rating. It connects via a male M12 4-pin connector.

Suited for presence detection in automation

This sensor suits applications requiring visible red light detection up to 3.7 m range with a 250 Hz switching frequency. It operates reliably between –25 °C and +70 °C ambient temperature. Buyers who need adjustable sensing distance or background suppression should look at other sensor types. The fixed optics and lack of adjustment limit flexibility for precise positioning tasks.

Fixed sensing range with no adjustment

The sensing range is factory-set at 0.05 m to 3 m with a maximum of 3.7 m and cannot be adjusted. A polarisation filter is included for reliable retro-reflective detection. The 2 ms response time and 100 mA output current support fast switching cycles. This fixed range determines whether the sensor fits the application distance requirements.

Highlights

  • Detects objects up to 3.7 m away
  • Visible red LED spot 150 mm at 3 m
  • PNP light switching output 100 mA max
  • IP67 nickel-plated brass housing resists harsh environments
  • Operates from –25 °C to +70 °C on 10–30 V DC

Specifications

BrandSick
ModelSICK VL18-3F3340

Questions about this item

How often will the M12 4-pin connector or the PMMA optics need cleaning or replacement in a dusty environment?

The IP67-rated nickel-plated brass housing and PMMA optics resist dust and water ingress; no scheduled replacement interval is defined, but periodic lens cleaning maintains the 3 m sensing range.

What is the first limit reached during continuous operation at the 250 Hz switching frequency?

The 2 ms response time and 100 mA maximum output current set the practical ceiling; sustained 250 Hz switching stays within these limits as long as the 10–30 V DC supply remains stable.

How much heat does the sensor generate when powered at 30 V DC all day?

At 30 mA draw the unit dissipates under 1 W, so heat rise is minimal; the –25 °C to +70 °C operating range handles continuous duty without additional cooling.

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