A redstone repeater is a block that produces a full-strength output signal from its front when its back is powered, with four configurable delay settings. It can also be locked into a power state by its side being directly powered by a repeater or a comparator.
Obtaining[]
Breaking[]
A redstone repeater can be broken instantly using any tool, or without a tool, and drops itself as an item. To remove a redstone repeater, mine it.
A redstone repeater is removed and drops as an item if:
- its attachment block is moved, removed, or destroyed;
- water or lava flows into its space;[Java Edition only]
- a piston tries to push it or moves a block into its space.
Natural generation[]
A redstone repeater generated in the jungle temple's hidden room.
A single redstone repeater is generated naturally in each jungle temple. They also generate in ancient cities.
Crafting[]
| Ingredients | Crafting recipe |
|---|---|
| Redstone Torch + Redstone Dust + Stone |
Usage[]
A redstone repeater can be used in four different ways: to "repeat" redstone signals back to full strength, delay signals, prevent signals moving backwards, or to "lock" signals in one state.
A repeater can be placed only on top of opaque blocks (dirt, stone, etc.), on top of upside-down slabs, upside-down stairs, furnaces, and glass. In Bedrock Edition, a repeater can also be placed on fences and stone walls. They can also be placed on some transparent blocks. See Opacity/Placement for more information. To place a repeater, use the Place Block control.
A redstone repeater has a front and back – the arrow on the top points to the repeater's front. A repeater also has two small redstone torches on its top – the color of the torches indicates whether its output is on (dark red when off, bright red when on) and the distance between them indicates the delay the repeater adds to the signal transmission.
A repeater is 0.125 (1⁄8) blocks high.
Signal transmission[]
A repeater transmits signals only from its back to its front, but its behavior can be modified from the side (see signal locking, below).
Different ways to power a repeater
A redstone repeater can be powered by any of the following components at its back:
- an active power component (redstone torch, lever, block of redstone, etc.)
- powered redstone dust
- a powered redstone comparator or another powered redstone repeater facing the repeater
- a powered opaque block (including any opaque mechanism components, such as dispensers, redstone lamps, etc.)
A redstone repeater can power any of the following components at its front:
- redstone dust
- a redstone comparator or another redstone repeater facing away from the repeater
- any opaque block (including any opaque mechanism components)
A redstone repeater can activate any mechanism component it is facing.
An opaque block powered by a redstone repeater is called "strongly-powered" (as opposed to an opaque block "weakly-powered" by redstone dust). A strongly-powered opaque block can power adjacent redstone dust, as well as other redstone components.
Signal repeating[]
A redstone repeater can "repeat" a redstone signal, boosting it back up to power level 15.
Redstone signals have a maximum power level of 15 and that level drops by 1 for every block of redstone dust the signal travels through. If a signal must travel through more than 15 blocks of redstone dust, a redstone repeater can be used to boost the signal back up to full strength. An extra two blocks of distance can be achieved by placing solid opaque blocks before and after the repeater.
While redstone repeaters can allow signals to travel great distances, each always adds some delay to the transmission since the minimum amount of delay is 1 redstone tick (0.1 seconds, barring lag).
Signal delay[]
When initially placed, a redstone repeater has a delay of one redstone tick (equivalent to two game ticks, or 0.1 seconds barring lag).
A repeater's delay can be modified by using the Use Item control. Each use increases the repeater's delay by one redstone tick, to a maximum of four redstone ticks, then back to one redstone tick. Longer delays can be made with multiple repeaters – for example, a repeater set to 'four' and another to 'one' provides a half-second delay (0.4s + 0.1s = 0.5s).
A repeater set to a delay of two to four redstone ticks increases the length of any shorter on-pulse to match the length of the repeater's delay, and suppress any shorter off-pulse. For example, a repeater set to a 4-tick delay changes a 1-tick, 2-tick, or 3-tick on-pulse into a 4-tick on-pulse, and does not allow through any off-pulse shorter than 4 ticks.
Although a repeater cannot be set to have a delay of zero, instant repeater circuits are possible (circuits that repeat a signal with no delay).
In Bedrock Edition, the first repeater have a delay of zero but the repeater is still showing 1-tick[more information needed]
Signal direction[]
A redstone repeater acts as a diode – it allows redstone signals through in one direction (unlike redstone dust or opaque blocks that can transmit redstone signals in any direction).
A diode can be used to protect a redstone circuit from redstone signals feeding back into the circuit from its output, or can be used to isolate one part of a circuit from another.
Signal locking[]
The left repeater has been locked in an unpowered output state by the right repeater.
A redstone repeater can be "locked" by another powered redstone repeater facing its side. When locked, the repeater does not change its output (whether powered or unpowered), no matter what the input does. When the side repeater turns back off, the repeater returns to its normal behavior.
A repeater can also be locked by a powered redstone comparator facing its side. This offers additional possibilities for locking signals because a comparator's output can be affected from 3 sides as well as by containers.
If a repeater is locked again too quickly after unlocking (e.g. the lock is controlled by a fast clock circuit), or the lock and the input are changed only on the same tick (e.g. because they're fed by the same clock and both repeaters have the same delay), the repeater does not switch states.
Sounds[]
| Sound | Subtitles | Source | Description | Resource location | Translation key | Volume | Pitch | Attenuation distance |
|---|---|---|---|---|---|---|---|---|
| Block broken | Blocks | Once the block has broken | block | subtitles | 1.0 | 0.8 | 16 | |
| Block placed | Blocks | When the block is placed | block | subtitles | 1.0 | 0.8 | 16 | |
| Block breaking | Blocks | While the block is in the process of being broken | block | subtitles | 0.25 | 0.5 | 16 | |
| None[sound 1] | Entity-Dependent | Falling on the block with fall damage | block | None[sound 1] | 0.5 | 0.75 | 16 | |
| Footsteps | Entity-Dependent | Walking on the block | block | subtitles | 0.15 | 1.0 | 16 |
| Sound | Source | Description | Resource location | Volume | Pitch |
|---|---|---|---|---|---|
| Blocks | Once the block has broken | dig | 1.0 | 0.8-1.0 | |
| Blocks | When the block is placed | dig | 1.0 | 0.8 | |
| Blocks | While the block is in the process of being broken | hit | 0.23 | 0.5 | |
| Players | Falling on the block with fall damage | fall | 0.4 | 1.0 | |
| Players | Walking on the block | step | 0.3 | 1.0 | |
| Players | Jumping from the block | jump | 0.12 | 1.0 | |
| Players | Falling on the block without fall damage | land | 0.18 | 1.0 |
Data values[]
ID[]
| Name | Identifier | Form | Translation key |
|---|---|---|---|
| Redstone Repeater | repeater | Block & Item | block.minecraft.repeater |
| Redstone Repeater | Identifier | Numeric ID | Form | Item ID[i 1] | Translation key |
|---|---|---|---|---|---|
| Unpowered block | unpowered_repeater | 93 | Block & Ungiveable Item[i 2] | Identical[i 3] | — |
| Powered block | powered_repeater | 94 | Block & Ungiveable Item[i 2] | Identical[i 3] | — |
| Item | repeater | 419 | Item | — | item.repeater.name |
Block states[]
| Name | Default value | Allowed values | Description |
|---|---|---|---|
| delay | 1 | 1234 | The redstone repeater's delay in redstone ticks. |
| facing | north | eastnorthsouthwest | The direction from the output side to the input side of a repeater. The opposite from the direction the player faces while placing the repeater. |
| locked | false | falsetrue | True if the repeater is currently locked. |
| powered | false | falsetrue | If the redstone repeater is lit. |
| Name | Metadata Bits | Default value | Allowed values | Values for Metadata Bits |
Description |
|---|---|---|---|---|---|
| direction (Deprecated) | 0x10x2 | 0 | 0123 | 0123 | The direction the repeater directs power.
|
| minecraft:cardinal_direction | Not Supported | south | eastnorthsouthwest | Unsupported | The direction from the output side to the input side of a repeater. The opposite from the direction the player faces while placing the repeater. |
| repeater_delay | 0x40x8 | 0 | 0123 | 0123 | The redstone repeater's delay in redstone ticks minus 1. |
Video[]
History[]
For a more in-depth breakdown of changes to repeater textures and models, including a set of renders for each state combination, see /Asset history
| Java Edition Beta | |||||
|---|---|---|---|---|---|
| 1.3 |   Added redstone repeaters.
| ||||
| Originally, the four possible settings were "1, 2, 5 and 7",[1] but Jeb decided to change the settings to "1, 2, 3, and 4".[2] | |||||
| The particles when breaking redstone repeaters erroneously use the pumpkin top texture. | |||||
| ? | The breaking particles of redstone repeaters now use the smooth stone slab top texture, even though none of the elements on the model use it. | ||||
| 1.7 |  The side texture of redstone repeaters has been changed to the previous bottom part of the texture.
| ||||
| Redstone dust now automatically connects to the input of a redstone repeater. Previously, it needed to be specifically pointed towards the repeater like with other blocks. | |||||
| ? | Redstone dust now visually connects to the output of redstone repeaters, though this does not change its behavior. | ||||
| Java Edition | |||||
| ? | The breaking particles of redstone repeaters have been changed to an unlit redstone torch when unpowered and a lit redstone torch when powered. | ||||
| 1.3.1 | 12w22a | Redstone repeaters now naturally generate inside jungle temples. | |||
| 1.3 |  The texture of redstone repeater items have been changed. | ||||
| 1.4.2 | 12w42a |  The top texture of redstone repeaters has now been changed.
| |||
 Added repeater locking to redstone repeaters. Interestingly, the smallest face of the bedrock cuboid's texture changes depending on the delay, but the other two faces remain the same. When/if this changed is unknown. | |||||
| 1.5 | 13w02a |  The side textures of redstone repeaters have been changed to use the top texture of stone slabs. | |||
| ? | The breaking particle of redstone repeaters has been changed once again and now matches the top texture of redstone repeaters. | ||||
| 1.8 | 14w06a | Repeaters no longer produce block light when powered. | |||
| 14w10a |  Torches on repeaters now no longer have protruding features.
| ||||
The torches underneath redstone repeaters have now been shortened, which has changed the underside textures from                 to                 . | |||||
| 14w10b |  Repeater torches now have protruding features again.[3] | ||||
| ? |  The torches on redstone repeaters are now affected by directional shading. | ||||
| 1.13 | 17w47a | All 3 IDs for the redstone repeater have now been merged into 1 ID: repeater.
| |||
| Added powered block state to redstone repeaters. | |||||
Redstone repeaters now render their underside, which has changed their undersides from to               . | |||||
| Prior to The Flattening, these blocks' numeral IDs were 93 and 94, and the item's 356. | |||||
| 1.14 | 18w43a |      The textures of redstone repeaters have now been changed. | |||
| 18w50a |   As the texture of bedrock has been changed, the textures of locked redstone repeaters have also now been changed. | ||||
| 19w12b | Redstone repeaters can now be placed on glass, ice, glowstone and sea lanterns. | ||||
| 1.19 | 22w13a | Redstone repeaters now generate in ancient cities. | |||
| 1.20.2 | 23w33a | Redstone repeaters now use stone sounds instead of wood sounds.[4] | |||
| Pocket Edition Alpha | |||||
| v0.14.0 | build 1 | Added redstone repeaters. | |||
| Bedrock Edition | |||||
| 1.2.0 | beta 1.2.0.2 | Redstone repeaters now render their underside, which has changed their undersides from to . | |||
| 1.10.0 | beta 1.10.0.3 |   The textures of redstone repeaters have now been changed. | |||
| 1.20.30 | beta 1.20.30.20 | Redstone Repeaters now use the minecraft:cardinal_direction block state instead of direction. | |||
| Legacy Console Edition | |||||
| TU1 | CU1 | 1.0 | Patch 1 | 1.0.1 | [verify] Added redstone repeaters. |
| TU19 | CU7 | 1.12 | [verify] Added repeater locking to redstone repeaters. | ||
| 1.90 | [verify] The textures of redstone repeaters have now been changed. | ||||
| New Nintendo 3DS Edition | |||||
| 0.1.0 | [verify] Added redstone repeaters and repeater locking. | ||||
Redstone repeater "items"[]
- The following content is transcluded from Technical blocks/Redstone Repeater.
| Java Edition Beta | |||||
|---|---|---|---|---|---|
| 1.3 | Both unpowered and powered repeaters have extra, unobtainable item forms corresponding to their block IDs. They can be obtained via inventory editors with numeric item IDs 93 and 94. | ||||
| 1.6 | Test Build 3 | Unpowered redstone repeater items can be obtained from the newly added debug chests, mainly from the 8th slot of the 4th chest from the left, and the 22nd slot of the 7th chest from the left. | |||
| Powered redstone repeater items can be obtained from the newly added debug chests, mainly from the 9th slot of the 4th chest from the left, and the 23rd slot of the 7th chest from the left. | |||||
| release | Debug chests no longer spawn, preventing unpowered and powered redstone repeater items from being obtained this way. | ||||
| Java Edition | |||||
| 1.3.1 | 12w16a | Unpowered and powered items can now be obtained in singleplayer worlds via the /give command using the respective numeric ID. | |||
| 1.7.2 | 13w37a | The direct item forms of unpowered and powered repeaters have been removed from the game. They can no longer exist as an item in any way, only as a placed block. | |||
| Pocket Edition Alpha | |||||
| ? | Redstone repeaters probably exist as an item. | ||||
Appearances[]
Unpowered Repeater[]
| Java Edition Beta | |||||
|---|---|---|---|---|---|
| 1.3 |  The unpowered repeater item uses this texture in inventories, when held in first or third person view or as a dropped item. | ||||
| Java Edition | |||||
| 1.4.2 | 12w34a | The unpowered repeater item now uses the aforementioned texture when in an item frame. | |||
| 1.5 | 13w02a |  The unpowered repeater item now uses this texture in inventories, when held in first or third person view, as a dropped item or when in an item frame.
| |||
| This is due to major texture storage changes in this version. | |||||
Powered Repeater[]
| Java Edition Beta | |||||
|---|---|---|---|---|---|
| 1.3 | The powered repeater item uses this texture in inventories, when held in first or third person view or as a dropped item. | ||||
| Java Edition | |||||
| 1.4.2 | 12w34a | The powered repeater item now uses the aforementioned texture when in an item frame. | |||
| 1.5 | 13w02a |  The powered repeater item now uses this texture in inventories, when held in first or third person view, as a dropped item or when in an item frame.
| |||
| This is due to major texture storage changes in this version. | |||||
| Bedrock Edition | |||||
| ? |  Powered repeaters use this texture.[5] | ||||
| ? |  Powered repeaters use this texture.[6] | ||||
Names[]
Unpowered Repeater[]
Item names did not exist prior to Beta 1.0.
- Beta 1.3 - 13w25b: [Has no defined name, rendering a minimum-length text box if highlighted]
- 13w25c - 13w36b: tile.diode.name
When given using the /give command, it is announced as tile.diode.name.
Powered Repeater[]
Item names did not exist prior to Beta 1.0.
- Beta 1.3 - 13w25b: [Has no defined name, rendering a minimum-length text box if highlighted]
- 13w25c - 13w36b: tile.diode.name
When given using the /give command, it is announced as tile.diode.name.
Issues[]
Issues relating to "Redstone Repeater" are maintained on the bug tracker. Report issues there.
Trivia[]
- The recipe and appearance of redstone repeaters are a likely reference to the old method of repeating signals, which would also use two torches at a time, inverting each other
Gallery[]
A redstone clock formed from a redstone torch and a repeater.
A redstone clock formed from two repeaters.
MCRedstoneSim diagram of a two-way repeater.
Crossing redstone wires using repeaters.
