Receivers are a type of component, they can be connected to one transmitter and receive signals.
Receivers of types without "extended" support alternate between the original block type and a redstone block based on the signal received.
Turns on or off based on the signal received.
Opens or closes based on the signal received. Any type of door can be used, including trapdoors.
Ignites or extinguishes based on the signal received.
Allows or disallows items to pass through the hopper based on the signal received.
Turns on or off based on the signal received.
This functionality is limited, block updates may turn off the repeater.
Turns on or off based on the signal received.
This functionality is limited, block updates may turn off the redstone.