Serial Expansion Module I2C Interface, Adopt SC16IS752 UART Expansion Chip, 8-bit I/O Expansion, 2-Channel UART 8 GPIOs Expansion,Suitable for Raspberry Pi Zero/Zero W/Zero WH/2B/3B/3B+/4B

Overview:
Intended for Raspberry Pi 40P connector design, suitable for Raspberry Pi Zero/Zero W/Zero WH/2B/3B/3B+/4B,
using SC16IS752 chip solution, it can expand two serial ports and 8 GPIOs at the same time.
Specifications:
Dimensions: 65mm(Length)*30.5mm(Width)
Supply voltage: 3.3V or 5V
Logic Voltage：3.3V
PWM Driver Chip: SC16IS752
Interface Protocol：I2C
Package contents:
1.Serial Expansion Module×1 2.PH2.54mm 16Pin wire x2
1.Onboard SC16IS752, can expand 2 serial ports and 8 programmable IO through I2C, does not occupy extra pins
2.By changing the address jumper, up to 16 modules can be connected at the same time, that is, 32 serial ports can be expanded；
3.Multiple onboard indicators, easy to check the working status of the extended serial port；
4.Reserve I2C control interface for easy access to other main control boards.
5.Suitable for Raspberry Pi Zero/Zero W/Zero WH/2B/3B/3B+/4B