Sick WL12G-3O2431 Photoelectric Sensor
Sick WL12G-3O2431 is a retro-reflective photoelectric sensor with 4 m sensing range and 1,500 Hz switching frequency operation support. This Sick photoelectric sensor from the W12 series uses autocollimation optics with polarisation filters, visible red LED at 640 nm, a 25 mm light spot, operates on 10–30 V DC, provides PNP output, ≤330 µs response time, and IP66/IP67/IP69K protection in a metal housing.
| Brand | Sick |
| Product Type | Photolectric Sensor |
| Model Number | WL12G-3O2431 |
Sick WL12G-3O2431 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 | LED |
| Type of light | Visible red light |
| Light spot size (distance) | Ø 25 mm (1.5 m) |
| Wave length | 640 nm |
| Adjustment | Potentiometer, 11 turns |
| Angle of dispersion | Approx. 1.5° |
| Special applications | Detecting transparent 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 | Approx. Uv / < 3 V |
| Output current Imax. | ≤ 100 mA |
| Response time | ≤ 330 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, 4-pin |
| Housing material | Metal, zinc diecast |
| 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 |
The WL12G-3O2431 Sick 1,500 Hz Retro-reflective Sensor is designed for reliable object detection in industrial automation environments. It operates as a retro-reflective photoelectric sensor with a 4 m sensing range, a 1,500 Hz switching frequency, and a PNP digital output using a visible red LED. The device belongs to the Sick W12 series and supports stable signal processing in automated systems.
In industrial applications, the WL12G-3O2431 Sick 1,500 Hz Retro-reflective Sensor is used on conveyors, packaging machines, automated assembly lines, and inspection stations. The focused light spot and polarisation filters enable dependable detection of transparent or reflective objects. High switching frequency and fast response time support consistent operation in fast-moving automation processes, while the compact rectangular housing allows flexible installation.
The WL12G-3O2431 from Sick combines defined optical behavior, electrical stability, and mechanical protection for long-term industrial use. With PNP output compatibility, wide operating temperature tolerance, and high enclosure ratings, it integrates reliably into standard control panels. As part of the W12 series, this Sick photoelectric sensor meets established industrial automation requirements where consistent retro-reflective sensing and durable performance are required.
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