m5stackM5Stack· Mechanics & transmission
Chain Mechanical Key Button (STM32G031)
Manufacturer part no. U206
$6.50≈ 5.71 €
Price summary
Listed by m5stack at €5.71. Delivered to France, including shipping, VAT and any customs duty, it comes to about €24.85. 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 | €5.71 |
|---|---|
| Shipping | €15.00 |
| VAT (20%) | €4.14 |
| Total delivered | €24.85 |
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.
Also available second-hand on eBay
up to 48% off new
UN Scott #113 5c Hands Globe 1962 Used Corner Inscription Block of 4 (U206)
sold by 823stamps · ships from US
Imported from outside the EU — duties and VAT included in the delivered cost; customs formalities and delays are not
Visit ↗€1.31
billed $1.49
€2.99 delivered
2020 Asher Wojciechowski #U-206 Topps Baltimore Orioles
Used · sold by edogsmedia · ships from CA
Imported from outside the EU — duties and VAT included in the delivered cost; customs formalities and delays are not
Visit ↗€1.26
billed $1.43
€3.88 delivered
U206-ANCIENT STATES-ITALY 1901 VITTORIO EMANUELE III 1 LIRA BROWN GREEN USED
New · sold by pj-collections · ships from IT
Visit ↗€1.54
billed $1.75
€5.30 delivered
EO 1989 BOB ET BOBETTE N° 221 SOS RHINOCEROS VANDERSTEEN STANDAARD (U206)
Used · sold by lura45 · ships from FR
Visit ↗€3.40
€6.40 delivered
2002 Fleer Tradition Update #U206 Chris Reitsma - BB
Used · sold by 1967dew · ships from US
Imported from outside the EU — duties and VAT included in the delivered cost; customs formalities and delays are not
Visit ↗€0.87
billed $0.99
€7.70 delivered
2020 Topps Update Series - Asher Wojciechowski #U-206 Advanced Stats /300
Used · sold by pullinwithp · ships from US
Imported from outside the EU — duties and VAT included in the delivered cost; customs formalities and delays are not
Visit ↗€1.32
billed $1.50
€11.01 delivered
Third-party listings on eBay, matched to this product by its part number or title. Robotitem neither sells nor warrants these items: condition, stock and lead times are the seller's, and a listing disappears once sold. Delivered cost includes the seller's actual shipping.
Specifications (automatically extracted)
Mechanical
| Weight | 20 g |
Description
Description 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. Chain Key integrates an STM32G031G8U6 core MCU and uses a UART serial cascading communication protocol. Through two HY2.0-4P expansion interfaces, it can connect more Chain series devices, enabling more complex and interactive applications. Features M5Stack Chain series Single button input STM32G031G8U6 core MCU Hot-swappable mechanical keyboard blue switch 2x RGB LED Uses UART cascading communication protocol 2x HY2.0-4P expansion interfaces to extend Chain series devices Includes 1 x Chain Key 1 x Chain Bridge 1 x Keycap Sticker Applications Smart home control Human-machine interaction Specifications Specification Parameter MCU STM32G031G8U6 Input Power DC 5V Communication Interface UART Interface Spec 2x HY2.0-4P RGB LED 2x WS2812B Working Power Consumption 28.24mA Working Temperature 0 ~ 40°C Product Size 23.9 x 23.9 x 34.4mm Product Weight 9.1g Package Size 138.0 x 93.0 x 26.0mm Gross Weight 14.4g Learn and Documents → DOCUMENTS