- Functional principle: Photoelectric retro-reflective sensor
- Functional principle detail: With minimum distance to reflector (dual lens system)
- Sensing range Sensing range min. 0.25 m Sensing range max. 19 m Maximum distance range from reflector to sensor (operating reserve 1) 0.25 m … 19 m Recommended distance range from reflector to sensor (operating reserve 3,75) 0.2 m … 14 m Reference reflector Reflector PL80A Recommended sensing range for the best performance 0.25 m … 14 m:
- Polarisation filters: Yes
- Light source PinPoint LED Type of light Visible red light Shape of light spot Point-shaped Light spot size (distance) Ø 16 mm (1 m) Maximum dispersion of the around the standardized transmission axis (squint angle) < +/- 1.0° (at Ta = +23 °C):
- Key LED figures Normative reference EN 62471:2008-09 | IEC 62471:2006, modified LED risk group marking Free group Wave length 635 nm Average service life 100,000 h at Ta = +25 °C:
- High-precision background-suppression technology: Detects objects reliably on shiny, dark, or textured surfaces, ensuring consistent performance in demanding industrial conditions.
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- Brand: Sick
Sick 1221733 Photoelectric retro-reflective sensor
Mfr # 1221733
$273.07
/ea
Availability: Available to Order|Typically ships within 7 to 10 business days. Lead time may vary based on supplier availability.
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- High-precision background-suppression technology: Detects objects reliably on shiny, dark, or textured surfaces, ensuring consistent performance in demanding industrial conditions.
- BluePilot intuitive adjustment with IO-Link support: Enables rapid setup using a rotary dial and provides advanced configuration, monitoring, and diagnostics via digital connectivity.
- PinPoint visible red LED light source: Produces a sharply defined, bright spot for accurate alignment and dependable object detection.
- Durable VISTAL® housing with IP66/IP67 protection: Compact, rugged design ensures long-term reliability while resisting dust, water, and mechanical stress.
The SICK WLD26P-341121A0ZZZ (Part No. 1221733) is a high-performance photoelectric sensor engineered to deliver precise, fast, and reliable object detection in industrial automation systems. As a member of the WLD26P series, it combines advanced optical technology, user-friendly setup, and robust construction, making it ideal for applications such as packaging, material handling, robotics, and automated manufacturing processes.
At the core of the sensor is its high-precision background-suppression technology, which ensures stable detection even on challenging surfaces. The sensor can accurately detect shiny metallic objects, dark-colored components, or textured materials without false triggers, providing consistent and repeatable operation. This capability is particularly important in high-speed production lines where detection accuracy directly impacts operational efficiency and product quality.
For easy and intuitive setup, the WLD26P-341121A0ZZZ features BluePilot adjustment, allowing operators to quickly configure the sensing range using a simple rotary dial. In addition, IO-Link connectivity enables remote parameterization, detailed diagnostics, and access to smart functions such as timing, logic, and predictive maintenance. This digital integration supports Industry 4.0 workflows, enabling real-time monitoring and ensuring reliable performance in complex production systems.
Detection precision is further enhanced by the PinPoint visible red LED light source, which generates a sharply focused spot to simplify alignment and ensure accurate object detection. The LED provides immediate visual feedback during installation and operation, reducing setup time and improving reliability, even in compact or constrained machine environments.
Mechanically, the sensor is housed in a compact VISTAL® enclosure, providing a strong yet lightweight design. Its IP66 and IP67 protection ratings safeguard against dust, water jets, and temporary immersion, ensuring dependable performance in harsh industrial environments. The compact dimensions make integration into conveyors, robotic systems, or machinery straightforward and space-efficient.
Electrically, the WLD26P-341121A0ZZZ operates on 10–30 V DC and offers a push-pull output (PNP/NPN) capable of switching up to 100 mA. With a response time of ≤1.4 ms and a switching frequency up to 350 Hz, the sensor delivers fast, reliable performance for high-speed automation applications. Built-in protection against short circuits, reverse polarity, and electrical interference ensures safe, stable, and long-term operation.
In summary, the SICK WLD26P-341121A0ZZZ is a robust, precise, and intelligent sensor solution. Its background-suppression technology, BluePilot adjustment, IO-Link connectivity, PinPoint LED, and durable VISTAL® housing make it ideal for industrial applications requiring high-speed, accurate, and consistent detection under demanding conditions.
Product Specifications
| Manufacturer | Sick |
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