Automatic Piston Lock

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

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	Wall Upgrade v1 buildings
Unlocked by	Portal Lock
Blueprint	common
Defence	30
Effect	auto- 23:30
Action Points cost	45
Resource cost	×10 ×2 ×1 ×2 ×1
Unlocks	See list
Piston-verrou

Use

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

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

• Building it gives 30 to the town.

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 ×10 ×3 ×4 ×1 to ×10 ×3 ×2 ×1.
• In Season 16:
  • The resource costs changed from ×10 ×3 ×2 ×1 to ×10 ×2 ×1 ×2 ×1.

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