Automatic Piston Lock

Automatic Piston Lock
This system uses powerful motorised pistons to automatically close the gates and prevent them from opening again half an hour before the attack.
Category	Buildings
Sub Category	Portal Lock
Blueprints Blueprint	Construction Blueprint (common) common
Parent building	Portal Lock Portal Lock
Defence	30
Action Points cost	24
Resource cost	Twisted Plank×10 Metal Support×3 Handful of nuts and bolts×2 Copper Pipe×1
Unlocks	See list

Usually a waste of otherwise good Handful of nuts and bolts Handful of nuts and bolts and Copper Pipe Copper Pipe. Better to assign a gate keeper and a backup.

Use

• Automatically locks the Town Gates Town Gates at 23:30, and will stay locked until The Attack The Attack ends.

[resident] wants you to know that the town gates will be closed automatically.

Unlocks

• Last Minute Lock Last-minute Lock

Notes

• In Season 3:
  • Piston-Lock was renamed Automatic Piston Lock.
• In Season 6:
  • The provided increased from 15 to 30
  • The resource costs dropped from Twisted Plank×10 Metal Support×3 Handful of nuts and bolts×4 Copper Pipe×1 to Twisted Plank×10 Metal Support×3 Handful of nuts and bolts×2 Copper Pipe×1