Redstone Comparator

A redstone comparator is a block that can produce a redstone signal from its front by reading chests, lecterns, copper bulbs, and similar blocks. It can also repeat a signal without changing its strength.

It can also be set to either stop outputting a signal while its side input is receiving a stronger one (front torch off), or output a weaker signal based on its side input's signal strength (front torch on).

A redstone comparator can be broken instantly with any tool, or by hand, and drops itself as an item.