SICK W4F Miniature Photoelectric Sensor - 0mm to 7000mm, up to 10000mm Reserve - 2m Lead - 1122376


W4F The high-flyers in intelligent automation

With the W4F, high performance and smart automation are now also available in a miniature size. The miniature sensor is the perfect complement to the product range of a new generation of opto-electronic sensors such as the W16 and W26 and, thanks to the new ASIC technology from SICK, consistently delivers extremely reliable detection results. This allows for versatile use in a wide range of challenging installation situations. Thanks to ForegroundSuppression, DoubleLine, V-optics and MultiSwitch, the W4F is a high-performance application specialist: Background suppression is improved, and flat, highly-reflective and transparent objects are detected even more precisely. In addition, the W4F as Smart Sensors make monitoring and diagnostics easier than ever before and enable future-proof use in I4.0 plants.

  • Technologies: ForegroundSuppression, DoubleLine, V-optics and MultiSwitch
  • Two switching points and distance value output in one device
  • Diffuse sender LED for ambient light suppression
  • Smart Sensor: Latest diagnostics and monitoring functions
  • VISTAL® housing


Functional principle Photoelectric retro-reflective sensor
Functional principle detail With minimum distance to reflector (dual lens system)
Sensing range
Sensing range min. 0 m
Sensing range max. 10 m
Maximum distance range from reflector to sensor (operating reserve 1) 0.4 m ... 10 m
Recommended distance range from reflector to sensor (operating reserve 3,75) 0.4 m ... 7 m
Reference reflector Reflector PL80
Recommended sensing range for the best performance 0.4 m ... 7 m
Emitted beam
Light source PinPoint LED
Type of light Infrared light
Shape of light spot Point-shaped
Light spot size (distance) Ø 40 mm (1,000 mm)
Maximum dispersion of the emitted beam around the standardized transmission axis (squint angle) < +/- 1.5° (at Ta = +23 °C)
Key LED figures
Normative reference EN 62471:2008-09 | IEC 62471:2006, modified
LED risk group marking Free group
Wave length 850 nm
Average service life 100,000 h at Ta = +25 °C
LED green Operating indicator
Static on: power on
LED yellow Status of received light beam
Static on: object not present
Static off: object present
Flashing: Below the 1.5 function reserve

Electrical Data

Supply voltage UB 10 V DC ... 30 V DC 1)
Ripple ≤ 5 Vpp
Usage category

DC-12 (According to EN 60947-5-2)

DC-13 (According to EN 60947-5-2)

Current consumption ≤ 20 mA, without load. At UB = 24 V
Protection class III
Digital output
Number 1
Type Push-pull: PNP/NPN
Signal voltage PNP HIGH/LOW Approx. UB-2.5 V / 0 V
Signal voltage NPN HIGH/LOW Approx. UB / < 2.5 V
Output current Imax. ≤ 100 mA
Circuit protection outputs Reverse polarity protected
Overcurrent protected
Short-circuit protected
Response time ≤ 500 µs
Repeatability (response time) 150 µs 2)
Switching frequency 1,000 Hz 3)
Pin/Wire assignment
Function of pin 4/black (BK) Digital output, dark switching, object present → output Ǭ HIGH

Mechanical Data

Housing Rectangular
Dimensions (W x H x D) 16 mm x 40.1 mm x 12.1 mm
Connection Cable, 3-wire, 2 m
Connection detail
Deep-freeze property Do not bend below 0 °C
Conductor size 0.14 mm²
Cable diameter Ø 3.4 mm
Length of cable (L) 2 m
Housing Plastic, VISTAL®
Front screen Plastic, PMMA
Cable PVC
Weight Approx. 30 g
Maximum tightening torque of the fixing screws 0.4 Nm


Click Here for PDF Data Sheet

Click Here for PDF on W4F Product Family