TENSTAR 2pcs MCP23017 Serial Interface Module IIC I2C SPI Bidirectional 16-Bit I/O Expander Pins 10Mhz Serial Module
$4.05
Today it costs $4.05 on AliExpress. Since Oct 24, 2026, when we started tracking it, the price hasn't changed. We haven't tracked it long enough yet to say whether it's on sale.
We have tracked this product for less than a day; confirming a drop takes at least 3 days. The store advertises "was $8.44", but that is the store's own claim; we only state discounts our price history proves.
View on AliExpressThe price above is the last recorded reading, not a live checkout lookup.
Price history
$4.05
We started tracking this price on Oct 24. The chart takes shape over the days: we only draw prices we observed.
| Store | TENSTAR 02 Store |
|---|---|
| Product rating | — |
| Store rating | — |
| AliExpress category | Electronic Components & Supplies › Active Components |
| Recorded readings | 1 |
| First seen | 10/24/2026 |
| Last reading | 10/24/2026, 7:57:49 AM UTC |