Actuator

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Desktop version Console version Mobile version
This is the main page whose information applies to the Desktop, Console, and Mobile versions of Terraria.
For the differences of this information on Old-gen console and 3DS, see Legacy:Actuator.
Actuator
  • Actuator item sprite
Auto-use
9999
Statistics
Type
MechanismCrafting material
Dimensions1 wide × 1 high
Use time15 (Very fast)
TooltipEnables solid blocks to be toggled on and off
RarityWhite (Rarity level: 0)
Buy10 SC
Sell2 SC
Research50 required
A player using Actuators to deactivate a wall of blocks.

The Actuator is a mechanism item purchased from the Mechanic for 10 SC each, or harvested from sand traps, lava traps, or Dead Man's Chest traps. It has to be placed on a tile and connected with wiring to function. When activated, the tile it is on toggles between active and inactive state, effectively allowing any block to be toggled like Active or Inactive Stone Blocks. Like Wire, Actuators are normally invisible and only become visible when a mechanism item is held.

The following items interact with Actuators:

  • They can be placed with The Grand Design (though they can also be placed by hand).
  • They can be removed with the Wire Cutter or The Grand Design.
  • The Presserator automatically places Actuators on objects when placing them, if the player has any.
  • The Actuation Rod can toggle any Actuator within a limited range without requiring Wire.

Crafting

Used in

ResultIngredientsCrafting station
Actuation RodActuation Rod(Desktop, Console and Mobile versions)Iron AnvilIron Anvil
or
Lead AnvilLead Anvil

Notes

Tips

  • Using Actuators in place of doors creates entrances that can completely block off the enemies from a Blood Moon or other events.
  • Traps can be deactivated by Actuators and will still fire when triggered, making it possible to place several traps in a row without blocking any of them.
  • Actuators can be used to pass through Hellstone in the Underworld without generating lava, Chlorophyte without defeating the three mechanical bosses, and Hive blocks without generating honey or spawning Bees. The Actuation Rod helps with quickly toggling placed Actuators.
  • If the player stands inside an inactive block and it becomes active, they can move inside the six blocks they are in, but will be stopped by other blocks. This may be used for protection.
  • Like naturally generated Wires, naturally generated Actuators can be harvested, though they appear much more rarely, saving 10 SC per Actuator.
  • Actuators are a good tool for terraforming or clearing the way for a plot, especially underground.

Trivia

  • The Multicolor Wrench is not capable of removing Actuators, even though it is crafted using the Wire Cutter, which does remove Actuators.
    • However, The Grand Design, crafted from the Multicolor Wrench, is capable of doing so.

History

  • Desktop 1.2.4: Actuated tiles no longer remove the water over them on world load.

References

  1. ↑ Information taken from the Desktop version Desktop 1.4.4.9 source code, method DeActive() in Terraria.Wiring.cs.
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