Controls the insulation transparency.
| Type: | Switch | 
| Saved in: | Registry | 
| Initial value: | -1 | 
| Value | Description | 
|---|---|
| -1 | The insulation transparency is defined by the insulation layer. | 
| -2 | The insulation transparency is defined by the pipe layer. | 
| 0-90 | Transparency value defined as a percentage. |