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Cylindrical M18 through-beam sensor, plastic PBT/PC housing, 75 mm length, radial optical axis, M12 4-pin connector

Sick

Sick VS/VE18-4P3840 Through-beam photoelectric sensor PNP M18 20m electrician tool

SKU CH-87ZT-42VKX MPN VS/VE18-4P3840

Through-beam photoelectric sensor detects objects up to 20 m with PNP output and IP67 enclosure

  • 20 m sensing range for long-distance detection
  • 14 m reliable range with 700 mm spot at distance
  • PNP output with selectable light or dark switching
  • IP67 enclosure withstands dust and water immersion
  • 10–30 V DC supply fits standard industrial power

Through-beam sensor for 20 m range

The Sick VS/VE18-4P3840 is a cylindrical through-beam photoelectric sensor built for industrial detection tasks. It uses an infrared LED to achieve a maximum sensing range of 20 m and an operating range of 14 m. The M18 x 1 threaded housing measures 75 mm in length with a radial optical axis. A 2.8° dispersion angle produces a 700 mm light spot at the rated operating distance.

Fits M18 mounts with 10–30 V DC supply

The sensor mounts directly into an M18 threaded hole and connects via a 4-pin M12 male connector. It operates on a 10 V DC to 30 V DC supply with a maximum current draw of 30 mA. The PNP switching output handles up to 100 mA and offers selectable light or dark switching through an external control cable. An IP67 enclosure rating and a –25 °C to +70 °C temperature range suit harsh environments.

Replaces shorter-range or fixed-output sensors

This unit upgrades installations that need longer reach than standard diffuse or retro-reflective types provide. The selectable switching mode replaces sensors with fixed logic, reducing stock variants. The 250 Hz switching frequency and 2 ms response time suit faster line speeds than slower legacy models. It is not for applications requiring background suppression, analogue output, or AC supply voltages.

Highlights

  • 20 m sensing range for long-distance detection
  • 14 m reliable range with 700 mm spot at distance
  • PNP output with selectable light or dark switching
  • IP67 enclosure withstands dust and water immersion
  • 10–30 V DC supply fits standard industrial power

Specifications

Brandsick
ModelVS/VE18-4P3840

Questions about this item

What is the maximum sensing distance before the signal becomes unreliable?

The through-beam sensor detects objects up to 20 m, with a practical sensing range of 14 m and a 700 mm light spot at that distance.

How much heat does the housing generate during continuous 24-hour operation?

Power consumption is 30 mA at 10–30 V DC, giving a maximum dissipation below 1 W, so the PBT/PC housing stays near ambient temperature.

Which connector and voltage must my control cabinet already provide?

A 4-pin M12 male connector supplying 10–30 V DC with PNP switching capability is required for the sensor to operate.

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