Mini RS232 - TTL Converter Module Board Adapter MAX3232 120kbps 3-5V Serial Port Transfer Board by Atomic Market
Manufactured By Atomic Market<br /> <br />Chip: MAX3232CSE <br />Voltage range: 3 v to 5 v <br />The highest baud rate : not recommended More than 120 KBPS <br />A converter board for electrical levels