A simple TTL to RS232 Convertor Board with 5v and 3.3v Power supply. It converts simple UART TTL signal into RS232 voltage levels that can be directly connected to PC.
We have provided on board voltage regulator so you can supply the circuit with 9-12V AC/DC. A 3.3Volts and 5Volts Vout pin has been provided so you can also provide 3.3V and 5V supply to other circuit as well.
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