ME Level Emitter can indicate either the
level of a specified item or the ME Network energy
level. You can set the threshold and if the ME Level Emitter will emit a redstone signal
or turn it off.
The Requires a channel to function, if its power or
channel is lost the emitter will switch to an off state.
These can tap into the crafting system when a crafting card is installed,
allowing you to output redstone while an item is being crafted, or even
configure the system to output redstone to preform a crafting task, its
important to note that you cannot mix level emitter craft via redstone with
interface patterns.