| Manufacturer | HELU |
| Type of wire | data transmission |
| Shield structure | shielded twofold, Al foil, tinned copper braid |
| Kind of core | Cu |
| Øext. cable | 8mm |
| Core marking | colours without colour repetition |
| Number of cores | 2 |
| No. of pairs | 1 |
| Earth core | none |
| Symbol | Core | CPR standard | Application | Wire insulation material | Kind of material |
|---|---|---|---|---|---|
| PROFIBUS-SK-FR-IN | wire | Eca | PROFIBUS SK; indoor | FRNC | halogen free, no flame propagation |
| PROFIBUS-SK-IN | wire | Eca | PROFIBUS SK; indoor | PVC | - |
| PROFIBUS-SK-TB | stranded | no classification | PROFIBUS SK; power chain | PVC | - |
| PROFIBUS-SK-VI | stranded | no classification | PROFIBUS SK; power chain | PVC | - |