#rpi serial expansion hat
UPC 779172279865
Bicool Serial Expansion HAT for Raspberry Pi 4B/3B+/3B/2B/Zero/Zero W/Zero WH, Onboard SC16IS752 I2C Interface 2- Channel UART 8 GPIOs Stackable to 16 Modules to 32-ch UART
Best Price: $16.29
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