The RS-232 protocol is a widely used standard protocol for communication between two devices. It is a full-duplex protocol, which means that it can receive and send data simultaneously. The data is transmitted with voltages from +3V to +15V for a digital "one" and from -3V to -15V for a digital "zero". This provides a secure environment for data transmission that is resistant to noise or interference. For this reason, RS-232 is often used in industry. This module converts serial communication to RS-232. Technical data https://elecena.pl/product/25816048/333067-developer-boards-rs232-interface-max232 2024-05-06 https://elecena.pl/product/25816048/333067-developer-boards-rs232-interface-max232 2025-04-07