(U206)Chain Key

Chain Mechanical Key Button (STM32G031)

SKU : U206
Shop : https://shop.m5stack.com/products/chain-mechanical-key-button-stm32g031?ref=langship
Shop(Japan) : https://www.switch-science.com/products/10869
Document : https://docs.m5stack.com/en/chain/Chain_Key
Release Date(probably) : 2025-11-14

Chain Key is a single-button input node in the M5Stack Chain series. The button adopts a hot-swappable mechanical keyboard design with a blue tactile switch and integrates a programmable RGB LED. It is suitable for human-machine interaction and smart home control scenarios.

Datasheet

Chain Key Schematics PDF : U206-SCH_Chain-Key_SCH_Main_V1.0_20250823_2025_09_30_21_04_28.pdf
Chain Key Model Size PDF : U206-model-size-chain-key.pdf
Chain Key Communication Protocol : M5Stack-Chain-Key-Protocol-EN.pdf