Containers

Containers are items that can store things and have inventories. They provide a redstone signal to a  Redstone Comparator.

Types of Containers

 * Brewing Stands
 * Chests
 * Trapped Chests
 * Dispensers
 * Droppers
 * Furnaces
 * Hoppers

Redstone Signal
The strength of the Redstone signal depends on how full the container is. For example, a chest with 27 slots but only 3 items will send a weaker signal than a hopper with 5 slots and 3 items. How full they are also depends on the sizes of the stacks of the items they contain. A chest filled with eggs (which stack to 16) will send a stronger signal than a chest half filled with sticks (which stack to 64). Even though the second chest has more items, the first chest has used more of the potential space.

trivia

 * The jukebox is also a container, however it is unknown when it will be added to MCPE.
 * The Redstone Comparator shows how full the container is.