The Redstone Repeater is a vanilla block that has three main functions: acting as a repeater, a diode, and/or a delayer. The block repeats signals it receives like a network bridge, so that using two not-gates every 15 blocks is no longer necessary. Signals are also accepted only in some directions, allowing the block to function much like a diode in an electrical circuit. It also delays the signal by 1-4 ticks (selectable) so that long timing circuits of inverters will not be required for timed mechanisms any longer.