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.
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