Sick WL12-3P2451 Photoelectric Sensor
The Sick WL12-3P2451 photoelectric sensor features 2 mm light spot, 2 m sensing range, PNP output, and IP69K protection for industrial detection applications. This WL12-3P2451 Sick 2 mm Light Spot Retro-reflective Sensor operates with LED visible red light, 640 nm wavelength, 1,500 Hz switching frequency, ≤ 330 µs response time, 10–30 V DC supply, metal housing, and M12 4-pin connector, available under Sick, categorized within Sick Photoelectric Sensors, and part of the W12 series for precise small object detection.
| Brand | Sick |
| Product Type | Photolectric Sensor |
| Model Number | WL12-3P2451 |
Sick WL12-3P2451 Photoelectric Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Functional principle | Photoelectric retro-reflective sensor |
| Functional principle detail | Autocollimation |
| Sensing range max. | 0 m ... 2 m |
| Sensing range | 0 m ... 1.3 m |
| Polarisation filters | Yes |
| Light source | LED |
| Type of light | Visible red light |
| Light spot size (distance) | Ø 2 mm (90 mm) |
| Wave length | 640 nm |
| Adjustment | Potentiometer, 5 turns |
| Angle of dispersion | Approx. 5° |
| Special applications | Detecting small objects |
| Items supplied | 2 x clamps BEF-KH-W12, incl. screws |
| Supply voltage UB | 10 V DC ... 30 V DC |
| Ripple | < 5 Vpp |
| Current consumption | 30 mA |
| Protection class | III |
| Digital Output type | PNP |
| Switching mode | Light/dark switching |
| Signal voltage PNP HIGH/LOW | > Uv - 2,5 V / ca. 0 V |
| Output current Imax. | ≤ 100 mA |
| Response time | ≤ 330 µs 4) |
| Switching frequency | 1,500 Hz 5) |
| Output function | Complementary |
| Special feature | Focused optics |
| Housing | Rectangular |
| Dimensions (W x H x D) | 15.6 mm x 48.5 mm x 42 mm |
| Connection | Male connector M12, 4-pin |
| Housing material | Metal |
| Front screen material | Plastic, PMMA |
| Enclosure rating | IP66, IP67, IP69K |
| Ambient operating temperature | –40 °C ... +60 °C |
| Ambient temperature, storage | –40 °C ... +75 °C |
| Weight | 120 g |
WL12-3P2451 Sick 2 mm Light Spot Retro-reflective Sensor refers to the Sick WL12-3P2451 photoelectric sensor designed for precise detection tasks. It provides 2 mm focused light spot, 0–2 m sensing range, PNP digital output, and IP69K enclosure rating. This model belongs to the W12 series and is widely used in industrial automation environments where small object detection and stable switching performance are required. Sick WL12-3P2451 ensures reliable operation with visible red LED light and autocollimation principle.
In industrial setups, the Sick WL12-3P2451 photoelectric sensor is used in conveyor systems, packaging lines, assembly machines, and inspection stations. Its focused optics allow accurate detection of small parts, even in fast-moving processes. The stable PNP output ensures consistent signal transmission to systems, while the high switching frequency supports rapid response applications. The robust housing and high protection rating make it suitable for environments exposed to dust, moisture, and washdown conditions.
The WL12-3P2451 Sick 2 mm Light Spot Retro-reflective Sensor, identified as Sick WL12-3P2451, combines precise sensing capability with reliable industrial performance. With features such as compact rectangular housing, durable metal body, and wide operating temperature range, it fits demanding automation requirements. As part of the W12 series, it maintains compatibility across similar models while ensuring consistent detection accuracy. Sick WL12-3P2451 is a dependable solution for engineers looking for stable, repeatable sensing performance in industrial applications.
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