Sculk Sensor — Minecraft block

Sculk Sensor

Sculk Sensor detects vibrations within 8 blocks and outputs a redstone signal — wireless redstone, mufflable with wool.

Block ID minecraft:sculk_sensor
Mod Vanilla
Game versions
1.21

Description

Sculk Sensor introduced wireless redstone to vanilla Minecraft for the first time. The block listens for vibration events — footsteps, block breaking and placing, doors opening, projectile impacts, mobs swimming, and dozens more — within an eight-block spherical radius, then emits a redstone signal whose strength varies by event type. Walking nearby produces a small signal of three or four; breaking a glass block produces a larger one. Each detection registers visibly with a brief cyan glow ring around the sensor.

Wool blocks are the universal countermeasure: any wool placed between the source of a vibration and the sensor blocks the signal entirely, allowing players to construct silent corridors near deep dark biomes. The block is craftable from one calibrated recipe (sculk sensor surrounded by amethyst shards on a crafter), allowing inputs to be filtered to specific frequencies in the calibrated variant. In the deep dark biome itself, sculk sensors trigger nearby sculk shriekers — and that chain summons the warden after enough activations.

Used in crafts

  • Calibrated Sculk Sensor