RAK 5010 External Sensor

My company is trying to connect an external sensor to the RAK 5010 chip. After reading the schematics, I am unsure which ports on the mod board is used for connecting external sensors? Any assistance would be greatly appreciated!

Welcome to RAK forum @BCBTrevor ,

You can have a look on these two pin headers (J10 and J12). It only has limited pins but you can have UART, I2C, ADC or standard IO functionality. You have to develop your own firmware to use these pins though.