In sourcing discussions, GRL18S-P2431 is often placed next to Sick Laser Sensor, Sick Gtb6 P4211 and P&F Photoelectric Sensor so procurement teams can align budgets and technical requirements effectively.
Sick GRL18S-P2431 Photoelectric Sensor
The Sick GRL18S-P2431 Photoelectric Sensor offers a Cylindrical design, 0.06 m ... 6 m sensing range, PinPoint LED light source, PNP output, and Male connector M12, 4-pin connection. Manufactured by Sick under the Sick Photoelectric Sensor category, this model belongs to the GR Series.
| Brand | Sick |
| Product Type | Photolectric Sensor |
| Product | GRL18S-P2431 |
Sick GRL18S-P2431 Photoelectric Sensor β Technical Specifications
| Specification | Value |
|---|---|
| Functional principle | Photoelectric retro-reflective sensor |
| Functional principle detail | Dual lens |
| Dimensions (W x H x D) | 18 mm x 18 mm x 38.1 mm |
| Housing design (light emission) | Cylindrical |
| Thread diameter (housing) | M18 x 1 |
| Optical axis | Axial |
| Sensing range max. | 0.03 m ... 7.2 m |
| Sensing range | 0.06 m ... 6 m |
| Type of light | Visible red light |
| Light source | PinPoint LED |
| Light spot size (distance) | Γ 175 mm (7 m) |
| Wave length | 650 nm |
| Adjustment | None |
| Indication | LED green, LED yellow |
| Supply voltage UB | 10 V DC ... 30 V DC |
| Ripple | < 5 Vpp |
| Current consumption | 30 mA |
| Switching Output | PNP |
| Switching mode | Light/dark switching |
| Signal voltage PNP HIGH/LOW | - |
| Output current Imax. | β€ 100 mA 3) |
| Response time | < 500 Β΅s 4) |
| Switching frequency | 1,000 Hz 5) |
| Connection type | Male connector M12, 4-pin |
| Protection class | III |
| Housing material | Metal, Nickel-plated brass and ABS |
| Optics material | Plastic, PMMA |
| Enclosure rating | IP67 |
| Items supplied | Fastening nuts (2 x) |
| Ambient operating temperature | β25 Β°C ... +55 Β°C 9) |
| Ambient temperature, storage | β40 Β°C ... +70 Β°C |
The GRL18S-P2431 from Sick is a compact and highly durable photoelectric retro-reflective sensor that features a dual-lens optical system for enhanced accuracy and stability. With dimensions of 18 mm x 18 mm x 38.1 mm and a threaded M18 x 1 housing, this cylindrical sensor is easy to mount even in tight spaces. Its axial optical axis and factory-calibrated configuration require no manual adjustments, ensuring reliable performance right out of the box. The sensor emits a visible red light using a PinPoint LED source with a wavelength of 650 nm, projecting a focused Γ 175 mm light spot at 7 meters.
Engineered for high-speed detection, the GRL18S-P2431 operates with a quick response time of less than 500 Β΅s and a switching frequency of 1,000 Hz, making it suitable for applications like high-speed sorting or counting. It supports light/dark switching with a PNP output and functions reliably on a 10 V DC to 30 V DC power supply, consuming only 30 mA. The sensor uses a 4-pin M12 male connector for straightforward electrical integration and includes green and yellow LED indicators for real-time status feedback. Built from nickel-plated brass and ABS with PMMA optics, and rated IP67, the sensor withstands industrial stressors like dust, humidity, and vibration.
Trusted by automation professionals worldwide, the GRL18S-P2431 offers unmatched reliability in detecting reflective objects across varied surfaces and conditions. Whether you're optimizing packaging machinery or automating conveyor-based systems, this sensor delivers consistent results with minimal maintenance.
The Sick WL4S-3F2130 Photoelectric Sensor is designed for tasks where precision and speed are critical. It is commonly used in automatic part detection on conveyor belts, where even small changes in object presence need to be identified without delay. For example, this sensor is ideal for detecting bottles, cartons, or component trays in industries such as FMCG, pharmaceuticals, and electronics.
Junior and senior maintenance engineers alike find it easy to work with because it requires no complex setup and maintains consistent accuracy over time. It can distinguish between reflective and non-reflective objects even in environments with varying light or dust levels. The visible red light makes alignment easy, which saves time during installation and troubleshooting.
Thanks to its fast response time and stable output, the WL4S-3F2130 also plays a key role in automated quality control systems, where missing or misaligned items need to be detected instantly to stop production or trigger corrective actions. This reduces manual inspection, increases production reliability, and ensures safety β all with a sensor built for rugged industrial use.
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