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.SG-SE-E752 Serial Expansion Module x1 2.Copper pillars x2 3.Screws x3 4.Nuts x3 See more

Serial Expansion Module not only is suitable for Raspberry Pi Zero/Zero W/Zero WH/2B/3B/3B+/4B,but also is reserved I2C control interface for easy access to other main control boards. Multiple onboard indicators, easy to check the working status of the extended serial port. By changing the address jumper, up to 16 modules can be connected at the same time, that is, 32 serial ports can be expanded. This serial IO expander is onboard SC16IS752, can expand 2 serial ports and 8 programmable IO through I2C, does not occupy extra pins. The settings of I2C address and the selection of interrupt pins are designed with slide switch, convenient for users to set.