This module can be used to convert the RS232 voltage of PC to TTL voltage that used by microcontroller. Directly plug the DB9 connector your PC then you can communicate with the microcontrollers using the Serial port. It is applicable to a variety of plat https://elecena.pl/product/6057228/rs232-to-ttl-converter-module-max3232 2016-05-07 https://elecena.pl/product/6057228/rs232-to-ttl-converter-module-max3232 2025-12-18