Detector

The Detector is a block that emits a redstone signal if an item or fluid count matches a given amount.

It is also possible to compare on NBT, damage or oredict while checking if the item or fluid is available.

Types of criteria

Criteria Explanation
< Emits signal when lower then given amount
> Emits signal when higher then given amount
= Emits signal when on given amount
When autocrafting Emits signal when the item is being autocrafted, amount is irrelevant here

No item or fluid specified?

When no item or fluid is specified, the criteria won't care about the item or fluid count of the specific item, but the item or fluid count of all the items or fluids in storage.

When no item or fluid is specified and the Detector is in "Detect when autocrafting" mode, it'll detect if any task is autocrafting.

Important thing to note about amounts in fluid mode

Note that when the Detector is in fluid mode, the amount given should be in millibuckets.

So, if you want to check for 1 bucket of water, use 1000 and not 1.