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Small aluminium fork sensor 10 by 32 by 57 mm with M8 connector

Sick

Sick WF2-40B410 Optical Fork Sensor NPN PNP

SKU CH-TCN0-3KTKA

Fork-shaped optical sensor detects 0.2 mm objects with infrared LED, selectable NPN/PNP output, 10 kHz switching, IP65 aluminium housing, M8 connector, 10–30 V DC

  • Detects objects as small as 0.2 mm with infrared optical fork
  • Switches at 10 kHz for fast automated processes
  • Selectable NPN or PNP output suits different controllers
  • IP65 aluminium housing resists dust and water jets
  • M8 4-pin connector enables quick installation

Optical Fork Sensor for Precision Detection

The Sick WF2-40B410 uses an infrared LED to detect objects as small as .2 mm across a 2 mm fork width. It suits automation tasks that require reliable label or edge sensing in a compact 10 mm by 32 mm by 57 mm aluminum housing. The sensor provides selectable NPN or PNP output with light/dark switching for flexible control logic.

Verify Voltage Wiring and Mounting Clearance

Confirm your system supplies 10 V DC to 30 V DC with ripple below 10 % before connecting the M8 4-pin male connector. The 42 mm fork depth and 36 g to 160 g weight range determine whether the unit fits your existing bracket and moving assembly. Ensure the IP65 enclosure rating matches the environmental protection required at the mounting point.

Stable Switching at High Speed Under Load

A 10 kHz switching frequency and 100 µs response time with ±20 µs stability maintain consistent detection during continuous operation. Jitter stays at 40 µs while the output handles up to 100 mA with short-circuit protection. The 100 ms initialization time and 10,000 lx sunlight immunity support reliable performance across extended production runs.

How it compares

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

Price $66.99
Cheaper than about 71% of the 5,006 comparable items (median $95.99).

Specifications

Product
Brand nameSICK
Model nameSICK WF2-40B410

Questions about this item

What is included with the Sick WF2-40B410 and what must be purchased separately?

The sensor unit is supplied new with an M8 4-pin male connector. A compatible M8 4-pin cable or connector, plus a 10 V DC to 30 V DC power supply, are required separately for operation.

How do I choose between the NPN and PNP output versions on this model?

This single unit provides both NPN and PNP switching outputs simultaneously. The output function is selectable via the plus/minus button for light or dark switching without needing a separate version.

What does the 10 kHz switching frequency mean for my application?

The sensor can switch up to 10,000 times per second with a 100 µs response time, enabling reliable detection of fast-moving objects or high-speed label edges on production lines.

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