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M5Stack C147 Chain DualKey
M5Stack C147 Chain DualKey is a programmable dual-key input development board equipped with the ESP32-S3FN8 main control chip. This dual-key comes with pre-installed Chain macro keyboard firmware that supports USB/BLE connections and can emulate HID input devices. The front key integrates 2 hot-swappable blue switch mechanical keyboard keys and 2 programmable RGB LEDs, providing excellent interactive feedback. This dualkey features two HY2.0-4P expansion ports that support lateral expansion and connection to other sensor devices. The C147 Chain dualkey is suitable for smart home applications, keyboard peripherals, macro keyboards, and other scenarios.