Redstone Comparator

Redstone Comparators are Blocks that were added in Update 0.14.0. They are a Redstone-related item.

crafting

 * 3 Redstone Torches + 1 Quartz + 3 Stone Blocks => 1 Redstone Comparator

Usage
Redstone Comparators are primarily used in redstone circuits to maintain, compare, or subtract signal strength, or to measure certain block states, including the fullness of containers such as Chests, Brewing Stands, and Furnaces.

Trivia

 * They are often confused with Redstone Repeaters.
 * Item Frames generate a redstone signal with redstone comparators when the object inside the item frame is rotated.
 * The comparator cannot be locked, like repeaters.
 * The player can make a redstone clock by connecting a comparator to itself.
 * The Redstone Comparator will have more power depending on how full a container is next to it.
 * The comparator has two block states: Subtraction Mode and Comparison Mode.