Redstone Comparators are components in the game Minecraft that help players manage and control Redstone signals. They can compare two signals and output a stronger signal based on the input they receive. This makes them useful for creating complex contraptions, such as automatic doors or traps. Comparators have three main functions: comparison, subtraction, and maintaining signal strength. When placed next to a Redstone source, they can detect the strength of the signal and adjust their output accordingly. This versatility allows players to build intricate mechanisms and automate various tasks within the game.