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Chain DualKey - programmable module with two mechanical keys - ESP32-S3 - M5Stack C147
Chain DualKey is a compact, programmable input board from the M5Stack Chain series, featuring two hot-swappable mechanical buttons (blue switches) and two programmable RGB LEDs. Designed as a universal control and automation tool , it combines the convenience of physical keys with modern USB and Bluetooth connectivity.
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Product description: Chain DualKey - programmable module with two mechanical keys - ESP32-S3 - M5Stack C147
The Chain DualKey is a compact, programmable input board from the M5Stack Chain series, equipped with two hot-swappable mechanical buttons (blue switches) and two programmable RGB LEDs . The device is designed as a universal control and automation tool , combining the convenience of physical keys with modern USB and Bluetooth connectivity. At the heart of the module is the ESP32-S3FN8, a powerful dual-core microcontroller with USB-OTG, WiFi, and BLE support, which enables emulation of HID devices (keyboards, controllers). The pre-installed Chain Macro Keyboard software allows for quick start-up without any programming required. Key functions are configured via the built-in web interface , accessible after connecting to the device's access point.
Chain DualKey - programmable module with two mechanical keys - ESP32-S3 - M5Stack C147.
Botland is an official distributor of the M5Stack module family in Poland. We have extended this system of stackable functional devices with accessories from our range and numerous blog guides. All M5Stack products presented here are original.
Chain DualKey is a compact, programmable entry board from the M5Stack Chain series.
Special features
- Two-key input module with hot-swap mechanical switches (blue switch)
- ESP32-S3FN8 - dual-core microcontroller with USB-OTG, WiFi and BLE support
- Pre-installed macro keyboard software
- HID device emulation via USB and Bluetooth
- Key configuration via web interface (AP)
- 2 programmable RGB WS2812B LEDs
- Built-in 350 mAh battery and low power consumption
- M5Stack Chain modular design, 2 HY2.0-4P connectors
- LEGO-compatible mounting holes and lanyard loop
Practical applications
Chain DualKey is perfect as a macro keyboard, keyboard shortcut controller, function key for home automation, or multimedia controller. It can be used as a computer accessory, a control panel in IoT projects, or as a user interface element in embedded systems. Thanks to BLE and USB communication and pre-built firmware, the module is also ideal for rapid prototyping and custom controller development.
Chain DualKey Technical Specifications
- SoC: ESP32-S3FN8, dual-core Xtensa LX7, up to 240 MHz
- Flash memory: 8 MB
- USB power supply: DC 5V
- Battery: Lithium-ion 350 mAh
- LEDs: 2 × RGB WS2812B
- Interfaces: USB, Bluetooth (BLE), WiFi
- Operating temperature: 0°C to 40°C
- Power consumption:
- Off mode (VBAT): 4.2 V @ 8.97 µA
- deep sleep (VBAT): 4.2 V @ 107.64 µA
- USB power supply (without battery): 5 V @ 41.7 mA
- Dimensions: 47.9 x 34.3 x 23.9 mm
- Weight: 23.7 g
Kit contents
- 1x Chain DualKey
- 1x Keycap Sticker
The key functions are configured via the built-in web interface, available after connecting to the device's access point.
Useful links
| Name | Value |
|---|---|
| Width | 7.5 cm |
| Height | 6.3 cm |
| Depth | 2.8 cm |
| Weight | 0.04 kg |
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30 days to return, without giving a reason
If the product does not meet your expectations, you have 30 days from receiving the parcel to withdraw from the contract. The product only has to be complete. The right of return belongs to consumers (a purchase unrelated to business activity).
Complaints
If the product turns out to be faulty, you can make a claim under the guarantee or the statutory warranty. We handle claims without delay, at the latest within 14 working days of receiving the report together with the goods.
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