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Photoelectric Retro-Reflective Sensor | 7m Sensing Range | NPN Output | IP66/IP67/IP69K Rated | by SICK
The Photoelectric Retro-Reflective Sensor WL12-3N2431T01 is designed for industrial automation, featuring a sensing range of up to 7 meters without a reflector and a reliable NPN digital output. With a durable Teflon-coated housing and IP66/IP67/IP69K ratings, it excels in hygienic and washdown zones, ensuring optimal performance in harsh environments.
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Product Name/Title: Photoelectric Retro-Reflective Sensor | 7m Sensing Range | NPN Output | IP66/IP67/IP69K Rated | by SICK
Brand: SICK
SKU: 1041443
Alternatively Known As: Photoelectric sensor, Retro-reflective sensor, SICK WL12 sensor, Industrial object sensor, NPN photoelectric sensor
Technical Specifications
- Functional principle: Photoelectric retro-reflective sensor without reflector minimum distance (autocollimation/coaxial optics)
- Sensing range max.: 0 m to 7 m
- Sensing range: 0 m to 5 m
- Polarisation filter: Yes
- Light source: LED, visible red light, wavelength 640 nm
- Light spot size at 3 m: Ø 70 mm
- Adjustment: Potentiometer, 5 turns
- Angle of dispersion: Approx. 1.5°
- Special features: Teflon coated housing
- Special applications: Hygienic and washdown zones
- MTTFD: 1,543 years
- Supply voltage UB: 10 V DC to 30 V DC
- Ripple: < 5 V pp
- Current consumption: 30 mA
- Protection class: III
- Digital output type: NPN
- Switching mode: Light/dark switching
- Output current Imax.: ≤ 100 mA
- Response time: ≤ 330 µs
- Switching frequency: 1,500 Hz
- Output function: Complementary
- Circuit protection: A, C, D
- Housing material: Metal zinc diecast with PTFE coating
- Connection: Male connector M12, 4-pin
- Enclosure rating: IP66, IP67, IP69K
- Ambient operating temperature: -40 °C to +60 °C
- Ambient storage temperature: -40 °C to +75 °C
- Dimensions (H x L x W): 49mm x 42mm x 16mm
- Weight: 0.12 kg
Key Features
- Photoelectric retro-reflective sensor with autocollimation/coaxial optics
- Sensing range up to 7 meters without reflector
- Polarisation filter for reliable detection
- Visible red LED light source with 640 nm wavelength
- Teflon coated metal zinc diecast housing for durability
- IP66, IP67, and IP69K rated for harsh environments
- Operating temperature range from -40°C to +60°C
- Light/dark switching with NPN digital output
- Fast response time of ≤ 330 µs and switching frequency of 1,500 Hz
- Potentiometer adjustment with 5 turns
Professional Installation Requirements
- Installation should be performed by a qualified electrician or technician familiar with photoelectric sensor wiring and safety standards.
Applications
- Industrial automation for object detection
- Hygienic and washdown zones
- Safety and monitoring in manufacturing processes
Standards & Compliance
- AS/NZS 3000 – Wiring Rules (Electrical Installation)
Environmental Benefits
- Durable construction reduces replacement frequency and waste
- Energy-efficient LED light source minimizes power consumption
- High ingress protection extends product lifespan in harsh environments
Warranty Information
Standard manufacturer warranty applies; please refer to SICK's official warranty policy.
Available Now
The SICK WL12-3N2431T01 Photoelectric Retro-Reflective Sensor is available for immediate purchase, ideal for industrial automation and hygienic zone applications.
