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