Sick GRL18S-P2431V Photoelectric Sensor
Sick GRL18S-P2431V photoelectric sensor provides 6 m sensing range, PNP output, and IP67 cylindrical M18 housing for automation. This Sick 18mm Cylindrical Photo Sensor uses a dual-lens retro-reflective principle with visible red PinPoint LED, operates on 10–30 V DC, and supports light/dark switching with <500 µs response time. It is part of Sick solutions, listed under Sick Photoelectric Sensors and the GR Series used in industrial automation.
| Brand | Sick |
| Product Type | Photolectric Sensor |
| Product | GRL18S-P2431V |
Sick GRL18S-P2431V Photoelectric Sensor – 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 55.9 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) | Ø 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 3) |
| Signal voltage PNP HIGH/LOW | VS - (≤ 3 V) / approx. 0 V |
| Output current Imax. | ≤ 100 mA 4) |
| Response time | < 500 µs 5) |
| Switching frequency | 1,000 Hz 6) |
| Connection type | Male connector M12, 4-pin |
| Protection class | III |
| Housing material | Stainless steel, Stainless steel V4A (1.4404, 316L) |
| Optics material | Plastic, PMMA |
| Enclosure rating | IP67 |
| Items supplied | Fastening nuts (2 x) |
| Ambient operating temperature | –25 °C ... +55 °C 1 |
| Ambient temperature, storage | –30 °C ... +75 °C |
The GRL18S-P2431V Sick 18mm Cylindrical Photo Sensor is a retro-reflective photoelectric sensor designed for stable object detection. The GRL18S-P2431V Sick 18mm Cylindrical Photo Sensor supports a 0.06–6 m sensing range, reliable PNP switching output, and a wide Ø 175 mm light spot. It belongs to the GR Series and is commonly integrated into industrial automation systems.
This sensor is used in conveyors, packaging equipment, automated assembly lines, and material handling systems. The dual-lens optical design enables consistent detection over longer distances, while the cylindrical M18 form factor allows easy mechanical integration. With 1,000 Hz switching frequency and fast signal response, it supports repeatable operation in standard automation cycles.
The GRL18S-P2431V from Sick is built with stainless steel housing, IP67 enclosure rating, and an M12 connector for secure electrical connection. Sick manufacturing standards ensure dependable performance in industrial environments where durability, consistent sensing, and long service life are required.
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