Chain Mechanical Key Button

Chain Mechanical Key Button

Brand: M5Stack
SKU: U206
6.20 GBP In stock Buy at Merchant

The Chain Key is a single-button M5Stack Chain input module with a blue mechanical switch and RGB status LED, designed for smart home controls and interactive projects.

  • It uses a UART-based serial cascading protocol.
  • It has two HY2.0-4P expansion ports.
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Takes ~2 minutes. No storefront changes.