Sick GRL18S-F2331 Photoelectric Sensor
Sick GRL18S-F2331 photoelectric sensor provides retro-reflective detection with 6 m range, PNP output, and IP67 enclosure for industrial automation. This Sick Dual lens Retro-reflective Sensor operates using visible red PinPoint LED at 650 nm wavelength, supports 10–30 V DC supply, and switches at 1,000 Hz with dark switching mode. It belongs to Sick sensing solutions, listed under Sick Photoelectric Sensors and the GR Series for industrial automation.
| Brand | Sick |
| Product Type | Photolectric Sensor |
| Product | GRL18S-F2331 |
Sick GRL18S-F2331 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 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) | 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 | Dark switching |
| Signal voltage PNP HIGH/LOW | VS - (≤ 3 V) / approx. 0 V |
| Output current Imax. | ≤ 100 mA 3) |
| Response time | < 500 µs 4) |
| Switching frequency | 1,000 Hz 5) |
| Connection type | Connector M12, 3-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 | –25 °C ... +55 °C 9) |
| Ambient temperature, storage | –40 °C ... +70 °C |
The GRL18S-F2331 Sick Dual lens Retro-reflective Sensor is designed for stable reflector-based object detection in industrial automation. The GRL18S-F2331 Sick Dual lens Retro-reflective Sensor supports a 0.06–6 m sensing range, reliable PNP switching output, and dual-lens optical principle. As part of the GR Series, it is commonly used where consistent retro-reflective sensing is required under controlled operating conditions.
In industrial applications, the GRL18S-F2331 is installed on conveyors, packaging machinery, automated assembly stations, and material handling systems. Retro-reflective sensing allows dependable object detection across varying surface properties. The <500 µs response time and 1,000 Hz switching frequency ensure accurate performance in fast-moving processes, while the M18 cylindrical housing supports compact mechanical installation.
The GRL18S-F2331 from Sick is engineered for long-term reliability in industrial environments. With IP67 enclosure protection, controlled current consumption, and robust metal housing, it delivers stable operation over extended periods. As a GR Series photoelectric sensor, the GRL18S-F2331 aligns with Sick sensing standards and supports precise retro-reflective detection in industrial automation systems.
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