Sick WL12G-3P2572 Photoelectric Sensor
Sick WL12G-3P2572 is a retro-reflective photoelectric sensor with 4 m sensing range, 660 nm light, and PNP output support. This Sick photoelectric sensor from the W12 series uses autocollimation optics with polarisation filters, PinPoint LED illumination, single teach-in adjustment, and delivers ≤333 µs response time on 10–30 V DC supply.
| Brand | Sick |
| Product Type | Photolectric Sensor |
| Model Number | WL12G-3P2572 |
Sick WL12G-3P2572 Photoelectric Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Functional principle | Photoelectric retro-reflective sensor |
| Functional principle detail | Autocollimation |
| Sensing range max. | 0 m ... 4 m |
| Sensing range | - |
| Polarisation filters | Yes |
| Light source | PinPoint LED |
| Type of light | Visible red light |
| Light spot size (distance) | Ø 25 mm (1.5 m) |
| Wave length | 660 nm |
| Adjustment | Single teach-in button |
| Angle of dispersion | - |
| Special applications | Detecting transparent objects |
| Items supplied | - |
| Supply voltage UB | 10 V DC ... 30 V DC |
| Ripple | < 5 Vpp |
| Current consumption | 40 mA |
| Protection class | III |
| Digital Output type | PNP |
| Switching mode | Light/dark switching |
| Signal voltage PNP HIGH/LOW | Approx. VS – 2.5 V / 0 V |
| Output current Imax. | ≤ 100 mA |
| Response time | ≤ 333 µs 4) |
| Switching frequency | 1,500 Hz 5) |
| Output function | - |
| Special feature | Detecting transparent objects |
| Housing | Rectangular |
| Dimensions (W x H x D) | 15.6 mm x 48.5 mm x 42 mm |
| Connection | Male connector M12, 5-pin |
| Housing material | Metal, zinc diecast |
| Front screen material | Plastic, PMMA |
| Enclosure rating | IP66, IP67 |
| Ambient operating temperature | –40 °C ... +60 °C |
| Ambient temperature, storage | –40 °C ... +75 °C |
| Weight | 120 g |
The WL12G-3P2572 Sick 660 nm Retro-reflective Sensor is a retro-reflective photoelectric sensor designed for precise object detection. This model provides 4 m sensing distance, PNP switching output, 660 nm visible red light, and fast response performance. As part of the Sick W12 series, the WL12G-3P2572 is engineered for industrial automation environments where stable optical detection and controlled alignment are required.
In conveyor systems, packaging machines, automated assembly lines, and material handling applications, the WL12G-3P2572 Sick 660 nm Retro-reflective Sensor supports reliable detection of standard and transparent objects. The autocollimation operating principle with polarisation filtering ensures consistent switching behavior, while the retro-reflective design simplifies installation in confined automation layouts.
The WL12G-3P2572 photoelectric sensor from Sick combines electrical stability with robust mechanical construction. Its metal housing, wide operating temperature range, and IP66/IP67 enclosure ratings support continuous industrial operation. Integrated within the W12 series, this Sick sensor is suitable for automation systems requiring dependable retro-reflective sensing and predictable PNP signal output.
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