Sick W27-3 Photoelectric Sensor Background Suppression 30 → 2000 mm Detection Range PNP

  • RS Stock No. 121-2721
  • Mfr. Part No. WTB27-3P2461
  • Manufacturer Sick
Technical data sheets
Legislation and Compliance
RoHS Certificate of Compliance
COO (Country of Origin): DE
Product Details

W27-3 Series

SICK W27 series photoelectric sensors are designed for harsh industrial environments, where it copes easily with heavy vibrations, shocks and extreme temperature fluctuations. The W27 photoelectric sensor is a leader in its class, especially through its reliable detection at long ranges. A diverse range of features further enhances application-specific functionality including, Teach or potentiometer adjustment, time delays, front lens heating, IO-Link, ASi, and universal voltage DC or AC/DC.

PinPoint LEDs detect all kinds of objects including transparent objects, light & dark, large or small and even people. The PinPoint technology enables quick and easy sensor alignment and provides a precise, highly visible light spot that is unaffected by peripheral light.

LED indicators located or the top panel allows the operator to quickly and easily set the minimum and maximum distances. In addition, the IO-Link function offers full process control, from commissioning to service.

Features and Benefits

· Precise background suppression for detection of multi-coloured objects
· Universal DC or DC/AC supply voltage
· Flexible sensor settings, monitoring, advanced diagnostics, and visualization
· Quick and easy commissioning due to a highly visible red PinPoint LED
· Resistant to ambient light, optical reflections, and crosstalk from other photoelectric devices
· Less contamination due to high operating reserves, reducing downtime
· Resistant to vibrations, reducing downtime
· Operation in harsh environments with temperatures as low as –40 °C
· IO-Link provides easy data access from the PLC
· Quick and easy configuration


The manufacturer notifies that article: 121-2721 Part Number: WTB27-3P2461 is being phased out and is not recommending the use of this article for new designs. The suggested replacement article is: 180-6355 Part Number: WTB26P-24161120A00. Please refer to our Migration Guide document above for full details.


For retro-reflective sensors a suitable reflector is required.
For PL80A, PL30A & C110 reflectors see stock nos. 265-2776, 265-2760 & 265-2748 respectively.

Attribute Value
Sensor Style Block
Detection Type Background Suppression
Detection Range 30 → 2000 mm
Output Type PNP
Electrical Connection 4-Pin M12 Connector
Maximum DC Voltage 30V
Terminal Type M12
Light Source LED
IP Rating IP69K
Maximum Current <lteq/>35 mA
Response Time <lteq/>1.5 ms
Housing Material ABS Plastic
Minimum Operating Temperature -40°C
Standards Met CE Certified, CULus Listed, UL NRKH.E181493, UL NRKH7.E181493
Maximum Operating Temperature +60°C
Mounting Type Panel Mount
Series W27-3
103 In stock for delivery within 7 working day(s) (Global Stock)
Price (ex. GST) Each
$ 360.32
(exc. GST)
$ 396.35
(inc. GST)
Per unit
1 +
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