Sick GRL18S-K2436 Photoelectric Sensor
Sick GRL18S-K2436 photoelectric sensor delivers 6 m retro-reflective sensing with PNP output and IP67 cylindrical M18 housing design applications. This Sick PMMA Retro-reflective Sensor uses dual-lens optics with visible red PinPoint LED, operates on 10–30 V DC, and supports light/dark switching with 1,000 Hz frequency. It belongs to Sick solutions, listed under Sick Photoelectric Sensors and the GR Series for industrial automation.
| Brand | Sick |
| Product Type | Photolectric Sensor |
| Product | GRL18S-K2436 |
Sick GRL18S-K2436 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 | Light/dark switching |
| Signal voltage PNP HIGH/LOW | - |
| Output current Imax. | ≤ 100 mA 3) |
| Response time | < 500 µs 4) |
| Switching frequency | 1,000 Hz 5) |
| Connection type | Male connector M12, 4-pin |
| Protection class | III |
| Housing material | Plastic, 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-K2436 Sick PMMA Retro-reflective Sensor is a cylindrical photoelectric sensor designed for stable object detection. The GRL18S-K2436 Sick PMMA Retro-reflective 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 widely used in industrial automation systems.
This sensor is commonly installed in conveyors, packaging machinery, automated assembly stations, and material handling lines. The dual-lens retro-reflective principle enables consistent detection across longer distances, while the M18 threaded housing simplifies mechanical mounting. With <500 µs response time and stable signal output, it supports continuous automation cycles.
The GRL18S-K2436 from Sick features an IP67-rated ABS housing with PMMA optics and an M12 connector for secure electrical integration. Sick manufacturing ensures dependable performance where environmental protection, repeatable sensing, and long operational life are required in industrial environments.
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