Onboard SC16IS752, this module is for Raspberry Pi series boards to have 2-ch extra UART and 8 programmable GPIOs
It is stackable up to 16 this modules by setting the address jumper, that means up to 32-ch UART
Onboard multi LEDs for indicating the UART working status. Reserved I2C control pins, allows to work with other control boards
Operating voltage: 3.3V, Control interface: I2C, Dimension: 65mm x 30mm, Mounting hole size: 3.0mm
Provide online development resources and manual (examples in C and python)