Redstone Comparator

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For other redstone-related objects found in Minecraft, see Redstone (disambiguation).

Redstone Comparators are special redstone blocks that are similar to Redstone Repeaters. Redstone comparators have a third torch on them, allowing for complex redstone circuits to be built. Redstone comparators have three ports, with two being for input, the third for output. Redstone comparators also measure how many things an entity holds or weighs, allowing for some very interesting adventure maps or mechanisms. They can also detect how many items are stored in a container block (such as a Chest, Hopper, Dropper or Minecart with Chest). It can be utilized in a Redstone Circuit. It makes the same sound as Wood when broken.

A tutorial on YouTube is available that shows how to build with redstone comparators.

A comparator has two "modes": "compare mode" and "subtract mode", which players can tell by the status of the single torch on the front. The default mode is "compare" mode, which means that it will compare the signal it receives from the side to the signal it receives from behind. If the signal from the side is stronger than the one from behind, it won't give off a signal. If the signal from the side is weaker than the one from behind, the comparator will give off a signal equal to the one it receives from behind.

On "subtract" mode, the comparator will produce a signal equal to the signal it receives from behind minus the signal it receives from the side.

As of 1.15, redstone comparators can now detect how much Honey is inside Bee Nests and Bee Hives. The output strength is equal to the amount of honey in the said hive.

Crafting

Redstone Comparator
None	Redstone Torch	None
Redstone Torch	Nether Quartz	Redstone Torch
Stone	Stone	Stone

Gallery

The difference between a comparator and a repeater.

Redstone comparator recipe.

Powered Redstone Comparator. (New texture)

Powered Redstone Comparator. (Old texture)

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Video

Finally Explained How Do Minecraft Comparators Work?

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