WT24-2B440 Photoelectric Proximity Sensor 1200mm NPN/PNP IP69K | SICK

The Original New SICK WT24-2B440 (1016934) is a rectangular photoelectric proximity sensor from the W24-2 series, engineered for reliable object detection using background suppression technology. It provides a maximum sensing range of 100 mm to 1,200 mm, with a visible red LED light source producing a Ø 40 mm light spot at 1,200 mm for straightforward alignment. The sensor offers selectable NPN/PNP output and light/dark switching, configured via on-device selectors, and is adjusted via potentiometer. Housed in a rugged zinc die-cast metal enclosure rated IP69K, it is built to withstand harsh industrial conditions, including high-pressure washdown, ambient light interference, and crosstalk from adjacent sensors.

Core Engineering Highlights:
Background suppression photoelectric proximity sensor | 100–1,200 mm sensing range | Selectable NPN/PNP output | Light/dark switching selectable | Visible red LED, 660 nm | Ø 40 mm light spot at 1,200 mm | ≤ 500 µs response time / 1,000 Hz switching frequency | 10–30 V DC supply voltage | IP69K zinc die-cast housing | M12 4-pin connector | –40°C to +60°C operating temperature

Key Features:

• Original New SICK WT24-2B440 sensor (part no. 1016934)

• Photoelectric proximity sensor with background suppression for detection independent of complex backgrounds

• Selectable NPN or PNP switching output

• Light/dark switching mode selectable via on-device selector

• Potentiometer adjustment for sensing range

• Visible red LED light source (660 nm) with Ø 40 mm light spot at 1,200 mm

• Immune to ambient light and crosstalk from other sensors, reducing downtime

• Rugged zinc die-cast metal housing with IP69K rating for harsh environments

• M12 4-pin male connector, 90° rotatable

• Terminal chamber protected by the housing

• Circuit protection: reverse polarity, interference pulse suppression, overcurrent, and short-circuit protection

• Test input for sender off (TE to 0 V)

• Protection class II

• Weight: 330 g

Applications:

• Object detection in complex backgrounds where reliable differentiation is required

• Harsh industrial environments requiring IP69K-rated sensing

• Applications with ambient light interference or adjacent sensor crosstalk

• Material handling and conveyor systems

• Packaging machinery and general factory automation

• Environments with extreme temperature fluctuations (front lens heating variants available in the W24 family)

Technical Specifications:

Footnotes:
¹ Average service life: 100,000 h at TU = +25°C.
² Limit values, operation in short-circuit protected network: max. 8 A.
³ May not fall below or exceed UV tolerances.
⁴ Without load.
⁵ Signal transit time with resistive load.
⁶ With light/dark ratio 1:1.
⁷ A = VS connections reverse-polarity protected.
⁸ C = interference suppression.
⁹ D = outputs overcurrent and short-circuit protected.
¹⁰ Reference voltage 50 V DC.

System Compatibility:

• Compatible with standard industrial controllers accepting NPN or PNP discrete inputs.

• M12 4-pin male connector (90° rotatable) mates with standard M12 female cordsets.

• Configuration via on-device potentiometer and selectors; no software required.

• Immune to ambient light and crosstalk, suitable for multi-sensor installations.

• Part of the W24 family, which includes variants with front lens heating, alarm output, and universal AC/DC voltage options.

Related Products:

• WT24-2B410 – W24-2 series proximity sensor, alternative output configuration

• WT24-2B420 – W24-2 series proximity sensor, alternative output configuration

• WT24-2B440T01 – W24-2 series sensor with terminal chamber connection

• WS/WE24-2B440 – W24-2 series through-beam sensor pair

• BEF-W24 – Mounting bracket for W24 series

• YF2A14-020VB3XLEAX – M12 straight female cordset, 4-pin, 2 m, PVC

PLC ERA is an independent industrial automation distributor supplying genuine Original New products through established global supply channels. All products are factory sealed when applicable and undergo quality inspection prior to shipment. SICK and W24-2 are trademarks of SICK AG.