WTB9-3P2461 Photoelectric Proximity Sensor PNP 350mm IP69K | SICK

The Original New SICK WTB9-3P2461 (1049049) is a miniature photoelectric proximity sensor from the W9-3 series, featuring background suppression for reliable, colour-independent object detection. Its PinPoint LED light source produces a sharply defined, visible red light spot of Ø 4.5 mm at 75 mm, simplifying alignment and enabling precise detection of small objects. Housed in a compact rectangular VISTAL® plastic enclosure rated IP66/IP67/IP69K, it withstands demanding washdown and industrial environments. The sensor offers a PNP complementary output with selectable light/dark switching and is adjusted via a 5-turn potentiometer.

Core Engineering Highlights:
Background suppression photoelectric proximity sensor | 20–350 mm maximum sensing range (20–200 mm rated) | PNP complementary output, light/dark switching | PinPoint LED, 650 nm visible red light | < 0.333 ms response time / 1,500 Hz switching frequency | 10–30 V DC supply voltage | IP66 / IP67 / IP69K enclosure rating | M12 4-pin connector | 12.2 × 52.2 × 23.6 mm VISTAL® housing | –40°C to +60°C operating temperature

Key Features:

• Original New SICK WTB9-3P2461 sensor (part no. 1049049)

• Photoelectric proximity sensor with background suppression for detection independent of background colour

• PinPoint LED with visible red light (650 nm) for a bright, precise Ø 4.5 mm light spot at 75 mm

• PNP complementary output with light/dark switching mode

• 5-turn potentiometer for sensitivity adjustment

• VISTAL® plastic housing with PMMA optics cover for high mechanical robustness

• IP66 / IP67 / IP69K protection ratings for harsh washdown environments

• M12 4-pin male connector for standard industrial connectivity

• Compact rectangular 12.2 mm width for high-density installations

• Reverse polarity, interference suppression, overcurrent, and short-circuit protection

• Average LED service life: 100,000 hours at +25°C

• MTTFd: 1,109 years / DCavg: 0% ¹

Applications:

• Object presence and position detection on conveyor and material handling systems

• Packaging machinery for product sorting and verification

• Small part detection in automated assembly lines

• Background-independent detection in space-constrained machinery

• General factory automation and OEM equipment

• Washdown applications requiring IP69K-rated sensing

Technical Specifications:

Footnotes:
¹ Object with 90% remission (based on standard white, DIN 5033).
² Object with 6% remission (based on standard white, DIN 5033).
³ Average service life: 100,000 h at TU = +25°C.
⁴ A = VS connections reverse-polarity protected; B = inputs and output reverse-polarity protected; C = interference suppression; D = outputs overcurrent and short-circuit protected.

System Compatibility:

• Compatible with standard industrial controllers accepting PNP discrete inputs.

• M12 4-pin male connector mates with standard M12 female cordsets.

• Suitable for systems requiring IP66/IP67/IP69K-rated photoelectric sensing.

• Configuration is performed via on-device potentiometer; no software required.

• Designed for background suppression tasks in packaging, material handling, and assembly applications.

Related Products:

• WTB9-3N2461 – NPN output variant, same sensing range

• WTB9-3P2461S01 – PNP output variant with M12 4-pin connector (alternate configuration)

• WTB9-3P2431 – PNP output, 20–350 mm range (different light spot)

• BEF-W9A – Mounting bracket for flexible sensor positioning

• YF8U14-020VB3XLEAX – M8 straight female cordset, 4-pin, 2 m, PVC

• 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 W9-3 are trademarks of SICK AG.