SICK WT24-2B440 1016934 W24-2 Photoelectric Proximity Sensor PNP/NPN

SICK WT24‑2B440 (1016934) is a rugged photoelectric proximity sensor from the W24‑2 series. The sensor uses the background suppression principle and a visible red LED to detect objects independent of the background. It has a sensing range of 100 mm to 1,200 mm (with 90 % reflectance). The output can be set to PNP or NPN via a converter, and the switching mode can be set to Light‑on (LO) or Dark‑on (DO) via a selector.

Applications:

• Object positioning on conveyor lines and sorting systems

• Packaging machinery for bottle, blister pack and label positioning

• Material handling in warehouses and distribution centers

• High‑speed assembly and pick‑and‑place stations (switching frequency 1,000 Hz)

• Heavy and harsh industrial environments (IP69K)

Core Specifications:

• Functional principle: Photoelectric proximity sensor, background suppression

• Dimensions (W × H × D): 27 mm × 87.5 mm × 65 mm

• Sensing range: 100 mm … 1,200 mm (adjustable via potentiometer)

• Light source: LED, visible red light

• Light spot size (distance): Ø 40 mm at 1,200 mm

• Supply voltage: 10 V DC … 30 V DC (residual ripple < 5 Vss)

• Current consumption: 50 mA (no‑load)

• Switching output: NPN, PNP (selectable via converter)

• Switching mode: Light/dark switching (selectable via selector)

• Output current: ≤ 100 mA

• Response time: ≤ 500 µs

• Switching frequency: 1,000 Hz

• Adjustment: Potentiometer

• Connection type: Male connector M12, 4‑pin

• Enclosure rating: IP69K

• Housing material: Metal, zinc diecast

• Optics material: Plastic, PMMA

• Circuit protection: A (reverse polarity), C (interference suppression), D (output overcurrent and short‑circuit protection)

• Protection class: II

Advanced Specifications:

• Test input transmitter off: TE to 0 V

• Weight: 350 g (approx.)

• Ambient operating temperature: –40 °C … +60 °C

• Storage temperature: –40 °C … +75 °C

• UL File No.: NRKH.E181493 & NRKH7.E181493

System Integration:

• The sensor supports direct connection to PLC inputs via the integrated M12 4‑pin male connector.

• Switching between PNP and NPN operation is done via the integrated converter.

• Adjustment of the sensing range is performed via the built‑in potentiometer.

Standards & Compliance:
Refer to manufacturer official documentation for detailed certification and compliance information.

Related Products:

• WT24‑2B410 – PNP/NPN proximity sensor, 100‑1,200 mm sensing range, analog accuracy features

• WT24‑2B420 – same family, PNP/NPN output comparator, medium‑range detection

• STE‑1204‑G – M12 straight female connector cable, 4‑pin, 2 m, PVC

• YF2A14‑020VB3XLEAX – M12 straight female connector cable, 4‑pin, 2 m, PVC

• BEF‑KH‑W24 – mounting bracket for flexible sensor positioning