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Cylindrical M18 nickel-plated brass sensor, 78 mm long, M12 4-pin connector

Sick

Sick VS/VE18-4N3240 Through-beam Photoelectric Sensor NPN

SKU CH-PYXM-EW9XQ

Through-beam photoelectric sensor detects objects up to 20 m with infrared LED, NPN output, IP67 metal housing, and M12 connector

  • 20 m maximum sensing range for long-distance detection
  • NPN output with selectable light or dark switching mode
  • IP67 rated metal housing withstands harsh environments
  • 10 to 30 V DC supply voltage suits industrial systems
  • 250 Hz switching frequency enables fast response applications

Industrial detection sensor

The Sick VS/VE18-4N3240 is a cylindrical through-beam photoelectric sensor with an M18 x 1 threaded housing. It uses an infrared LED source to detect objects across a sensing range of 0 m to 20 m, with a defined operating range up to 14 m. The unit supplies an NPN switching output selectable for light or dark switching via a control cable. It suits automation engineers integrating presence detection into conveyor or packaging lines.

Sustained operation profile

The sensor draws 30 mA from a 10 V DC to 30 V DC supply with ripple limited to 10 %. Its switching frequency reaches 250 Hz and response time is 2 ms, allowing continuous high-speed counting or sorting tasks. The metal nickel-plated brass housing carries an IP67 enclosure rating and operates from –25 °C to +70 °C. A potentiometer provides 270° sensitivity adjustment for stable long-term calibration.

Pre-installation checks

Verify that your control system accepts an NPN output with a maximum load of 100 mA. Confirm the 10 V DC to 30 V DC supply rail can deliver the required current with ripple below 10 %. Ensure an M12 4-pin male connector matches your cabling and that the 78 mm housing length fits the available mounting space. The sensor carries UL file NMFT2.E175606 for compliance reference.

How it compares

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

Price $77.99
Cheaper than about 63% of the 5,006 comparable items (median $95.99).

Specifications

Product
Brand nameSick
Model nameSICK VS/VE18-4N3240

Questions about this item

How much heat does the VS/VE18-4N3240 generate when powered continuously from a 24 V DC supply?

The sensor draws a maximum of 30 mA from a 10 V DC to 30 V DC supply, so at 24 V the power dissipation is well under one watt and the housing stays cool in a 25 °C ambient.

What connector and voltage source must I already have to wire this sensor?

You need a 10 V DC to 30 V DC power supply and a female M12 4-pin connector to match the sensor's male plug.

Will the M18 x 1 thread and 78 mm length let me swap this unit into an existing VS/VE18 bracket?

Yes, the cylindrical metal housing uses the standard M18 x 1 thread and 78 mm length, so it fits the same mounting holes as other VS/VE18 models.

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