Sensors

  

Desktop/Console/Mobile-Only Content: This information applies only to the Desktop, Console, and Mobile versions of Terraria.

Sensors

• 

  

• Sensors placed

Statistics

Type	FurnitureMechanism
Placeable	✔️ (1 wide × 1 high)
Use time	15 (Very fast)
Rarity	01*
Research	5 required

• Internal Item ID: 3613–3615, 3726–3729 (Desktop, Console and Mobile versions)
• Internal Tile ID: 423

Sensors are Hardmode mechanisms that emit a signal under specific circumstances. There are 7 different types of sensors, split into 2 sub-categories: Logic Sensors and Liquid Sensors.

Types

Sensor		Tooltip
	Logic Sensor (Day)(Desktop, Console and Mobile versions)Internal Item ID: 3613	Activates once day starts
	Logic Sensor (Night)(Desktop, Console and Mobile versions)Internal Item ID: 3614	Activates once night starts
	Logic Sensor (Player Above)(Desktop, Console and Mobile versions)Internal Item ID: 3615	Activates whenever players are over it, deactivates otherwise
	Liquid Sensor (Water)(Desktop, Console and Mobile versions)Internal Item ID: 3726	Activates whenever occupied by water, deactivates otherwise
	Liquid Sensor (Lava)(Desktop, Console and Mobile versions)Internal Item ID: 3727	Activates whenever occupied by lava, deactivates otherwise
	Liquid Sensor (Honey)(Desktop, Console and Mobile versions)Internal Item ID: 3728	Activates whenever occupied by honey, deactivates otherwise
	Liquid Sensor (Any)(Desktop, Console and Mobile versions)Internal Item ID: 3729	Activates whenever occupied by liquid, deactivates otherwise

Crafting

Recipes

Result	Ingredients	Crafting station
Liquid Sensor (Any)(Desktop, Console and Mobile versions)	Cog5 Magic Water Dropper(Desktop, Console and Mobile versions) Magic Lava Dropper(Desktop, Console and Mobile versions) Magic Honey Dropper(Desktop, Console and Mobile versions) Wire	Mythril Anvil or Orichalcum Anvil
Liquid Sensor (Honey)(Desktop, Console and Mobile versions)	Cog5 Magic Honey Dropper(Desktop, Console and Mobile versions) Wire
Liquid Sensor (Lava)(Desktop, Console and Mobile versions)	Cog5 Magic Lava Dropper(Desktop, Console and Mobile versions) Wire
Liquid Sensor (Water)(Desktop, Console and Mobile versions)	Cog5 Magic Water Dropper(Desktop, Console and Mobile versions) Wire
Logic Sensor (Day)(Desktop, Console and Mobile versions)	Soul of Light5 Any Iron Bar Wire
Logic Sensor (Night)(Desktop, Console and Mobile versions)	Soul of Night5 Any Iron Bar Wire
Logic Sensor (Player Above)(Desktop, Console and Mobile versions)	Soul of Sight Any Iron Bar Wire

Notes

• The Player Above sensor detects players in a 5×10-tile area above the sensor. In multiplayer, it will not send another signal if a player enters the detection zone while another player is already in it.
  • It will also trigger on the position of dead players until they respawn. This fact may be relevant in situations where the player is likely to be killed near the sensor.

History

 Desktop version

• Desktop 1.3.1: Introduced.

 Console version

• Console 1.0.1372.5: Introduced.

 Nintendo Switch version

• Switch 1.0.895.9: Introduced.

 Mobile version

• Mobile 1.4.0.5.0: Introduced.