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Small rectangular photoelectric sensor with cable and M12 connector

Sick

Sick WTF18-3V910 Photoelectric Sensor PNP 10-30V 800mm IP67

SKU CH-BW46-08H3N

A photoelectric proximity sensor with background suppression, 50–700 mm sensing range and PNP dark-switching output in an IP67 ABS housing

  • Background suppression detects objects up to 800 mm reliably
  • Infrared LED at 870 nm provides consistent sensing in varied light
  • PNP dark-switching output delivers 100 mA at 700 Hz switching speed
  • IP67-rated ABS housing withstands –40 °C to +60 °C operating range
  • Compact 17.6 × 75.5 × 33.5 mm design fits tight mounting spaces

Sick WTF18-3V910 Photoelectric Sensor

The Sick WTF18-3V910 is a rectangular photoelectric proximity sensor with background suppression. It operates on a 10 V DC to 30 V DC supply and offers a sensing range from 50 mm up to 700 mm with a maximum reach of 800 mm. The housing measures 17.6 mm by 75.5 mm by 33.5 mm and weighs 70 g. An IP67 enclosure rating protects the ABS housing and PMMA optics in harsh environments.

Industrial Automation and Sensing Applications

This sensor suits engineers integrating object detection into packaging, material handling or assembly lines where a compact PNP dark-switching output is required. The 0.29 m cable with an M12 male connector simplifies installation in tight spaces. Buyers needing an NPN output, light-switching logic or a longer pigtail cable should look at alternative models. The potentiometer adjustment provides four turns for precise range setting.

Integration Into Control Systems

The unit connects via a 4-pin M12 plug on a short PVC cable, linking directly to PLC input modules or fieldbus I/O blocks. A 100 mA maximum output current drives relays or indicator lamps without an intermediate amplifier. The 700 Hz switching frequency and sub-700 µs response time support high-speed counting or positioning tasks. Operating temperatures from –40 °C to +60 °C allow use in unheated factories or outdoor machinery.

How it compares

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Price $135.99
Pricier than about 64% of the 5,006 comparable items (median $95.99).

Specifications

Product
Brand nameSICK
Model nameSICK WTF18-3V910

Questions about this item

What supply voltage must my system provide for the WTF18-3V910 to operate?

The sensor requires 10 V DC to 30 V DC with ripple below 5 Vpp and a current draw of 55 mA.

Will the PNP dark-switching output work with my existing PLC input module?

The output switches 100 mA maximum at up to 700 Hz; verify your PLC accepts PNP dark-switching signals within those limits.

How can I confirm the sensor is detecting at the intended distance after mounting?

Adjust the 4-turn potentiometer while watching the output LED; the sensing range is 50 mm to 700 mm with an 800 mm maximum.

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