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Sick WTT12L-B2561 Photoelectric Sensor
The Sick WTT12L-B2561 Photoelectric Sensor provides a one-hundred to three-thousand-eight-hundred millimeter sensing range using visible red laser light. It includes background suppression, a PNP/NPN push-pull output, and a ≤ 5 ms response time with a 100 Hz switching frequency. The sensor operates on 10–30 V DC, features a four-turn potentiometer, an M12 connector, IP67 protection, VISTAL® housing, and PMMA optics. Explore Sick Sensors, view Sick Photoelectric Sensors, and browse the Sick WTT Series.
| Brand | Sick |
| Product Type | Photoelectric Sensors |
| Model Number | WTT12L-B2561 |
Sick WTT12L-B2561 Photoelectric Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Functional principle | Photoelectric proximity sensor |
| Functional principle detail | Background suppression, Optical time-of-flight |
| Dimensions (W x H x D) | 20 mm x 49.6 mm x 44.2 mm |
| Housing design (light emission) | Rectangular |
| Sensing range max. | 50 mm ... 3,800 mm |
| Sensing range | 100 mm ... 3,800 mm |
| Type of Light | Visible red light |
| Light source | Laser 3) |
| Light spot size (distance) | Ø 18 mm (3,800 mm) |
| Wave length | 658 nm |
| Laser class | 1 (IEC 60825-1 / CDRH 21 CFR 1040.10 & 1040.1 |
| Adjustment | Potentiometer, 4 turns (1 x) |
| Supply voltage UB | 10 V DC ... 30 V DC |
| Ripple | < 5 Vpp |
| Current consumption | 70 mA 3) |
| Switching output | Push-pull: PNP/NPN |
| Switching mode | Light/dark switching |
| Output current Imax. | ≤ 100 mA |
| Response time | ≤ 5 ms |
| Switching frequency | 100 Hz 6) |
| Connection type | Male connector M12, 5-pin |
| Protection class | III |
| Housing material | Plastic, VISTAL® |
| Optics material | Plastic, PMMA |
| Enclosure rating | IP67 |
| Ambient operating temperature | –35 °C ... +50 °C 10) |
| Ambient temperature, storage | –40 °C ... +70 °C |
| Weight | 48 g |
The Sick WTT12L-B2561 Photoelectric Sensor is designed for reliable object detection with a 100–3,800 mm sensing range, visible red laser operation, and a PNP/NPN push-pull output. The Sick WTT12L-B2561 uses optical time-of-flight measurement and supports a 100 Hz switching frequency. As part of the WTT series, it is suited for industrial automation tasks requiring stable sensing performance in compact machine layouts.
This sensor performs well in conveyors, packaging machines, automated handling systems, and assembly stations where consistent background suppression is necessary. Its IP67 VISTAL® housing provides durability in dusty or humid environments, and the M12 connector simplifies installation. The fast response and defined spot size make it effective for detection in high-throughput industrial processes.
The Sick WTT12L-B2561 Photoelectric Sensor offers dependable sensing, stable switching, and long-term reliability for industrial use. Its defined sensing range, laser-based operation, and rugged enclosure support consistent performance in automation and material movement applications. Sick’s engineering quality ensures the WTT12L-B2561 remains a trusted option for demanding machine environments.
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