WL12L-2B520 Laser Retro-Reflective Sensor 15m PNP/NPN | SICK

The Original New SICK WL12L-2B520 (1018253) is a laser photoelectric retro-reflective sensor from the W12-2 Laser series, designed for precise, long-range object detection using autocollimation and coaxial optics. Its visible red Class 2 laser produces a sharply defined light spot of Ø 0.8 mm at 300 mm, enabling reliable detection of small objects and high-speed moving targets. The optical system is focusable from 150 mm to 450 mm, with sensitivity adjustable via potentiometer. Housed in a robust metal enclosure rated IP67/IP69K, it is built for demanding industrial environments and supplied with two BEF-KH-W12 mounting clamps including screws.

Core Engineering Highlights:
Photoelectric retro-reflective sensor, autocollimation (coaxial optics) | 0 m to 15 m maximum sensing range | Class 2 visible red laser, 650 nm | Ø 0.8 mm light spot at 300 mm | PNP/NPN selectable output | Light/dark switching selectable via L/D control cable | ≤ 200 µs response time / 2,500 Hz switching frequency | 10–30 V DC supply voltage | IP67 / IP69K enclosure rating | M12 5-pin connector | –10°C to +50°C operating temperature

Key Features:

• Original New SICK WL12L-2B520 sensor (part no. 1018253)

• Laser retro-reflective sensor with autocollimation and coaxial optics for precise alignment

• Long sensing range up to 15 m with reflector PL80A

• Focusable optical system from 150 mm to 450 mm for flexible application setup

• Potentiometer for sensitivity adjustment

• Polarisation filter for reliable detection of shiny objects

• PNP and NPN outputs with selectable light-on/dark-on switching

• Switching mode selector via L/D control cable

• Rugged metal housing with IP67/IP69K protection

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

• Supplied with 2 x BEF-KH-W12 mounting clamps including screws

• Suitable for detecting small objects and objects moving at high speeds

Applications:

• Small object detection in industrial automation

• Detection of high-speed moving targets on production lines

• Long-range object presence and position monitoring

• Material handling and conveyor systems

• Packaging machinery and logistics equipment

• Applications requiring precise laser-based retro-reflective sensing

Technical Specifications:

Footnotes:
¹ Reflector PL80A.
² Average service life: 50,000 h at TU = +25°C.
³ Pulse length 4 µs, max. pulse power < 5.0 mW.
⁴ Do not intentionally look into the laser beam. Never point the laser beam at people's eyes.
⁵ Limit values when operated in short-circuit protected network: max. 8 A.
⁶ May not exceed or fall below UV tolerances.
⁷ Without load.
⁸ Signal transit time with resistive load.
⁹ With light/dark ratio 1:1.
¹⁰ A = VS connections reverse-polarity protected.
¹¹ C = interference suppression.
¹² D = outputs overcurrent and short-circuit protected.

System Compatibility:

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

• M12 5-pin connector mates with standard M12 female cordsets.

• Requires a separate reflector (e.g., PL80A) for operation.

• Light/dark switching mode selectable via L/D control cable.

• Supplied with BEF-KH-W12 mounting clamps for secure installation.

Related Products:

• PL80A – Fine triple reflector for maximum 15 m sensing range

• P250 – 47 × 47 mm rectangular reflector for shorter-range applications

• BEF-KH-W12 – Replacement mounting clamps (2 x with screws, included)

• WL12L-2B530 – Similar laser retro-reflective sensor with focusable range from 300 mm to infinity

• WL12L-2B520 – Current model, focusable from 150 mm to 450 mm

• YF2A15-xxxUB5M2A15 – M12 5-pin straight female cordset, various lengths

• YG2A15-xxxUB5M2A15 – M12 5-pin angled female cordset, various lengths

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 W12-2 Laser are trademarks of SICK AG.