# Railway Signalling

> Canonical source: [Railway Signalling](https://satisfactorybase.com/wiki/schematics/railway-signalling)
> Language: en

## Properties

- Entity type: Milestone
- Tier: 6
- Completion time: 300 s

## Unlock cost

- [Computer](/wiki/items/computer): 50
- [Steel Pipe](/wiki/items/steel-pipe): 400
- [Copper Sheet](/wiki/items/copper-sheet): 1 000

## Unlocked buildings

- [Block Signal](/wiki/buildings/block-signal)
- [Path Signal](/wiki/buildings/path-signal)

## Technical Details

- Class name: Schematic_6-7_C
- Native class: FGSchematic
- Asset path: /Game/FactoryGame/Schematics/Progression/Schematic_6-7