REDSTONE REPEATER
Extends, delays, and isolates redstone signals. Refreshes signal back to 15 regardless of input strength. Adjustable delay from 1 to 4 ticks. Can be locked by powering its side.
Crafting Recipe
3 Stone + 2 Redstone Torches + 1 Redstone Dust → 1 Redstone Repeater
Signal Behavior
Input
InputRedstone signal from back
Output
Signal strength 15 from front (refreshed)
Max Signal Strength
15
Delay
1-4 redstone ticks (configurable)
Modes
- 1-tick delay
- 2-tick delay
- 3-tick delay
- 4-tick delay
- Locked mode
Crafting Redstone Repeater: the grid and what it all costs
To craft Redstone Repeater you place 3 Stone, 2 Redstone Torch and 1 Redstone in the shape below, which fills a 3x2 corner of the grid. 6 items in, one Redstone Repeater out.
Most of that is Stone: 3 of the 6 squares, so stock up on that before you start on Redstone Repeater.
Where each item goes in the 3x2 Redstone Repeater grid
| Goes into Redstone Repeater | Amount in the grid |
|---|---|
| Stone | 3 |
| Redstone Torch | 2 |
| Redstone | 1 |
| Redstone Repeater out of one craft | 1 |
Read straight off the Redstone Repeater recipe in Java Edition 26.2.
What the Redstone Repeater is, and what it does for you
Extends, delays, and isolates redstone signals. Refreshes signal back to 15 regardless of input strength. Adjustable delay from 1 to 4 ticks. Can be locked by powering its side.
As a transmission component its job is to carry, refresh, or reshape a signal as it moves between other blocks. It is the signal booster, one-way valve, and adjustable delay line rolled into one block, and it underpins nearly every clock and timed door.
Since Beta 1.3 the Redstone Repeater has been part of redstone, and Java Edition 26.2 is the version described here.
Inside the Redstone Repeater: what the signal actually does
Input for the Redstone Repeater means redstone signal from back, and the output is signal strength 15 from front (refreshed).
It only passes signal from back to front, refreshing whatever it receives back up to a clean 15, so it both isolates and extends a line. Right-clicking cycles its delay through 1, 2, 3, and 4 redstone ticks. Powering its side from another repeater or comparator locks it, freezing its current output as a 1-bit memory.
Timing-wise, factor in 1-4 redstone ticks (configurable) when you wire it into a sequenced circuit.
Strength 15 at the source means the last powered piece of dust sits 15 blocks away from the Redstone Repeater, and the one after it stays dark.
These are the modes you can put the Redstone Repeater into, and each one changes what comes out: 1-tick delay, 2-tick delay, 3-tick delay, 4-tick delay, and locked mode.
From nothing to a working Redstone Repeater
- 1Craft the Redstone Repeater: 3 Stone + 2 Redstone Torches + 1 Redstone Dust → 1 Redstone Repeater.
- 2Set the Redstone Repeater down facing the way the signal has to travel, on a block that will actually hold it in place, with the dust already run out on the far side.
- 3Wire dust into its input side and read the refreshed or modified signal off its output side, keeping its facing in mind.
- 4Before it goes anywhere near a real build, run the Redstone Repeater on its own a few times over and check every result against the timing figures listed above this step.
Where the Redstone Repeater earns its keep
- ▸Signal extension beyond 15 blocks
- ▸Precise timing delays
- ▸Signal isolation (one-way)
- ▸Locking mechanisms
- ▸Clock circuits
Tips & common mistakes
- !Only transmits in one direction (back to front)
- !Locked repeater holds its state
- !Right-click cycles through 1-4 tick delays
- !Its one-way nature trips up beginners constantly, face the arrows in the direction you want the signal to flow or nothing comes out.
The Redstone Repeater FAQ, answered
What do redstoners actually build with the Redstone Repeater in Minecraft?
The Redstone Repeater is most often used for signal extension beyond 15 blocks, precise timing delays, signal isolation (one-way), and locking mechanisms. As a transmission component its job is to carry, refresh, or reshape a signal as it moves between other blocks.
How far does the Redstone Repeater push a signal?
Up to 15 out of the Redstone Repeater, and not a level more than that. Signal strength 15 from front (refreshed).
What does a Redstone Repeater cost to make?
3 Stone + 2 Redstone Torches + 1 Redstone Dust → 1 Redstone Repeater. It was introduced in Beta 1.3.
Does the Redstone Repeater add any delay to a circuit?
Yes, 1-4 redstone ticks (configurable). Account for that timing when chaining it with other components, especially in clocks and fast doors.
How much delay can a redstone repeater add?
Each repeater adds 1 to 4 redstone ticks of delay, set by right-clicking it (1 tick = 0.1s, so the range is 0.1s to 0.4s per repeater). Chain several in a row to build up longer delays.
Components that connect to Redstone Repeater
Follow Redstone Repeater further into the site through these 3 component pages:
How Redstone Repeater holds up: hardness, blasts and light level
There is nothing to mine here. Redstone Repeater sits at hardness 0 and pops off immediately.
Blast resistance matches at 0, so a creeper next to Redstone Repeater takes it with him. It emits no light of its own, so it will not stop a mob spawning next to it.
| Redstone Repeater | Value in Java Edition |
|---|---|
| Redstone Repeater hardness | 0 |
| Redstone Repeater blast resistance | 0 |
| Fastest tool on Redstone Repeater | no tool in particular |
| Light out of Redstone Repeater | 0 |
