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Sick-WLF4FI-973121A0ZZZ
WLF4FI-973121A0ZZZ

Photoelectric sensorsW4, WLF4FI-973121A0ZZZSensing range min. / max.: 0 m / 10 mFunctional principle: Photoelectric retro-reflective sensorFunctional principle detail: With minimum distance to reflector (dual lens system)Switching output: Push-pull: PNP/NPNSwitching mode: Light switchingConnection type: Cable with connector M8, 3-pin, with knurled nuts, 338 mmLight source: PinPoint LEDType of light: Infrared lightHousing material: VISTAL®Adjustment: NoneHousing: Rectangular

Photoelectric sensors
W4, WLF4FI-973121A0ZZZ
Sensing range min. / max.: 0 m / 10 m
Functional principle: Photoelectric retro-reflective sensor
Functional principle detail: With minimum distance to reflector (dual lens system)
Switching output: Push-pull: PNP/NPN
Switching mode: Light switching
Connection type: Cable with connector M8, 3-pin, with knurled nuts, 338 mm
Light source: PinPoint LED
Type of light: Infrared light
Housing material: VISTAL®
Adjustment: None
Housing: Rectangular

Functional principlePhotoelectric retro-reflective sensor
Functional principle detailWith 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 reflectorReflector PL80
Recommended sensing range for the best performance0.4 m ... 7 m
Emitted beam
Light sourcePinPoint LED
Type of lightInfrared light
Shape of light spotPoint-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 referenceEN 62471:2008-09 | IEC 62471:2006, modified
LED risk group markingFree group
Wave length850 nm
Average service life100,000 h at Ta = +25 °C
Adjustment
None
Indication
LED greenOperating indicator
Static on: power on
LED yellowStatus of received light beam
Static on: object not present
Static off: object present
Flashing: Below the 1.5 function reserve

As Mnelko, we are a reliable partner in industrial automation solutions, offering high-quality and innovative products with a wide product range to meet all the needs of your business. Our product portfolio consists of solutions designed based on the principles of high performance, durability, and efficiency to support modern industrial processes.
All of our products ensure maximum reliability even in challenging working conditions and help your business operations run smoothly. The products we offer in industrial automation, energy management, cabling solutions, and many other areas adapt flexibly to the needs of different sectors.
Additionally, our products are manufactured using only high-quality materials and comply with international standards. Through the solutions we provide, we enable our customers to increase operational efficiency and optimize costs. Our company closely follows technological advancements and continuously offers innovative products to help our customers gain a competitive advantage.
On each of our product pages, you can find comprehensive information about technical details, areas of use, and product features. You can explore all the products you need to strengthen your industrial processes on our website and enjoy a seamless purchasing experience.

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