m5stackM5Stack· Boards & embedded computing
Chain Dual Key with ESP32-S3
Manufacturer part no. C147
$14.50≈ 12.74 €
Price summary
Listed by m5stack at €12.74. Delivered to France, including shipping, VAT and any customs duty, it comes to about €33.29. Prices last checked on 2026-09-29.
Delivered cost is an estimate for a single item shipped to mainland France; the seller's checkout is authoritative.
In stock
Estimated landed cost
| Item | €12.74 |
|---|---|
| Shipping | €15.00 |
| VAT (20%) | €5.55 |
| Total delivered | €33.29 |
Estimate for a single item delivered to mainland France, shipped from outside the EU: customs duty and clearance fees may apply and are charged by the carrier.
Price history
2 price/stock records since 8/19/2026
Specifications (automatically extracted)
Mechanical
| Weight | 48 g |
Description
Description Chain DualKey is a programmable dual-key input development board equipped with the ESP32-S3FN8 main control chip. The front integrates 2 hot-swappable blue switch mechanical keyboard keys and 2 programmable RGB LEDs, providing excellent interactive feedback. It has a built-in 350mAh lithium battery, combining with a low-power design for good battery life. The product comes with pre-installed Chain macro keyboard firmware, supports USB / BLE connections, and can emulate HID input devices. After the device is powered on, you can connect to the device's AP hotspot and configure the HID function mapping for the local device or expansion nodes via the built-in web page to achieve various control functions. This development board adopts the M5Stack Chain series expandable design, featuring two HY2.0-4P expansion ports that support lateral expansion and connection to other sensor devices. With the USB-OTG peripheral function built into ESP32-S3, it is suitable for smart home, keyboard peripherals, macro keyboards, and other scenarios. Features ESP32-S3FN8 main control chip Built-in 350mAh lithium battery 2 programmable RGB LEDs 2 hot-swappable blue switch keys M5Stack Chain series expandable design LEGO-compatible holes on the back Lanyard design Includes 1 x Chain DualKey 1 x Keycap Sticker Applications Smart home control Macro keyboard Keyboard peripherals Specifications Specification Parameter SoC ESP32-S3FN8 @ Dual-core Xtensa LX7 processor, with a main frequency up to 240MHz Flash 8MB Power Input USB: DC 5V Battery 350mAh lithium battery RGB LED 2x WS2812B Operating Temp 0 ~ 40°C Standby Current Power-off mode (VBAT): DC [email protected] Deep sleep mode (VBAT): DC [email protected] USB 5V power (no battery): DC [email protected] Product Size 47.9 x 34.3 x 23.9mm Product Weight 23.7g Package Size 63.0 x 72.0 x 28.0mm Gross Weight 39.3g Learn and Documents → DOCUMENTS