Sick WL4S-3F2130 Photoelectric Sensor
The Sick WL4S-3F2130 Photoelectric Sensor offers a Rectangular design, 650 nm sensing range, PinPoint LED light source, PNP output, and –40 °C ... +60 °C connection. Manufactured by Sick under the Sick Photoelectric Sensor category, this model belongs to the WL Series.
| Brand | Sick |
| Product Type | Photoelectric Sensor |
| Model Number | WL4S-3F2130 |
Sick WL4S-3F2130 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 | 0 m ... 2.5 m |
| Light source | PinPoint LED |
| Type of light | Visible red light |
| Light spot size (distance) | Ø 45 mm (1.5 m) |
| Wave length | 650 nm |
| Adjustment | None |
| Supply voltage UB | 10 V DC ... 30 V DC |
| Ripple | < 5 Vpp |
| Current consumption | 20 mA |
| Protection class | III |
| Digital Output type | PNP |
| Switching mode | Dark switching |
| Output current Imax. | ≤ 100 mA |
| Response time | < 0.5 ms |
| Switching frequency | 1,000 Hz |
| Housing | Rectangular |
| Design detail | Slim |
| Dimensions (W x H x D) | 12.2 mm x 41.8 mm x 17.3 mm |
| Connection | Connector M8, 3-pin |
| Housing material | Plastic, ABS |
| Front screen material | Plastic, PMMA |
| Enclosure rating | IP67, IP66 |
| Ambient operating temperature | –40 °C ... +60 °C |
| Ambient temperature, storage | –40 °C ... +75 °C |
| Weight | 30 g |
At the core of the Sick WL4S-3F2130 lies a photoelectric retro-reflective sensing principle with autocollimation, enabling accurate detection even with shiny or low-contrast objects. It supports a sensing range of 0 to 2.5 meters (maximum 4 meters with suitable reflectors), using a highly focused PinPoint LED that emits visible red light at a wavelength of 650 nm. This tight light beam ensures the sensor can detect small objects or labels with precision while minimizing misalignment errors.
Built for speed, the sensor offers a rapid response time of less than 0.5 milliseconds and a switching frequency of 1,000 Hz, making it ideal for fast-moving conveyor lines or high-speed packaging systems. Its output is configured as PNP with dark switching, and it operates on a 10 V DC to 30 V DC supply, consuming just 20 mA, which helps reduce energy usage in continuous operations.
Encased in a slim, rectangular housing made of durable ABS plastic, with a front screen built from impact-resistant PMMA, the sensor achieves IP66/IP67 protection. This means it’s resistant to dust, water splashes, and washdowns—perfect for harsh industrial settings. The compact dimensions (12.2 mm width, 41.8 mm height, 17.3 mm depth) and M8 3-pin connector allow flexible mounting even in tight control cabinets or complex machinery. Its wide temperature range from –40 °C to +60 °C makes it dependable for both indoor and outdoor installations in Indian industrial environments.