Sick GL6L-F6212 Photoelectric Sensor
The Sick GL6L-F6212 photoelectric sensor delivers laser retro-reflective detection with 12 m sensing range and PNP output for industrial automation. This Sick 336 mm Retro-reflective Sensor uses a visible red 680 nm laser light source, supports 1,000 Hz switching frequency, operates on 10–30 V DC, and features an IP67 rectangular housing with 336 mm cable and M8 connector. It is manufactured by Sick, listed under Sick Photoelectric Sensors, and belongs to the G6 Series for industrial automation systems.
| Brand | Sick |
| Product Type | Photoelectric Sensors |
| Model Number | GL6L-F6212 |
Sick GL6L-F6212 Photoelectric Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Functional principle | Photoelectric retro-reflective sensor |
| Functional principle detail | - |
| Sensing range max. | 12 m |
| Sensing range | - |
| Light source | Laser |
| Type of light | Visible red light |
| Light spot size (distance) | Ø 3.5 mm (1,000 mm) |
| Wave length | 680 nm |
| Adjustment | Potentiometer, Operating mode switch |
| Supply voltage UB | 10 V DC ... 30 V DC |
| Ripple | < 5 Vpp |
| Current consumption | ≤ 20 mA, without load. At UB = 24 V |
| Protection class | III |
| Digital Output type | PNP |
| Switching mode | - |
| Switching mode selector | - |
| Signal voltage PNP HIGH/LOW | Approx. UB-3 V / 0 V |
| Output current Imax. | ≤ 100 mA |
| Response time | < 625 µs |
| Switching frequency | 1,000 Hz 3) |
| Housing | Rectangular |
| Dimensions (W x H x D) | 12 mm x 31.5 mm x 21 mm |
| Connection | Cable with M8 male connector, 4-pin, 336 mm |
| Housing material | Plastic, ABS |
| Front screen material | Plastic, PMMA |
| Enclosure rating | IP67 (EN 60529) |
| Ambient operating temperature | –20 °C ... +50 °C |
| Ambient temperature, storage | –40 °C ... +70 °C |
| Weight | Approx. 60 g |
The GL6L-F6212 Sick 336 mm Retro-reflective Sensor is a laser-based photoelectric sensor designed for long-distance object detection. The GL6L-F6212 operates with 12 m sensing capability, PNP digital output, laser light source, and a 1,000 Hz switching frequency. It belongs to the Sick G6 series and is widely used in industrial automation environments requiring stable retro-reflective sensing.
The GL6L-F6212 Sick 336 mm Retro-reflective Sensor is commonly applied in conveyors, packaging machines, automated assembly lines, and material handling systems. Laser-based detection enables precise sensing over extended distances. Its compact rectangular housing and defined cable length support reliable installation in space-constrained automation layouts.
The Sick GL6L-F6212 Photoelectric Sensor offers consistent electrical performance and mechanical reliability in industrial conditions. Its IP67-rated enclosure supports operation in dusty or humid environments. As part of the G6 series, the GL6L-F6212 aligns with Sick photoelectric sensor standards, supporting dependable integration into industrial automation systems.

