This module can realize the mutual conversion between TTL signal and RS485 signal, but 485 is half-duplex communication. This communication mode can realize two-way communication, but it can not be carried out in two directions at the same time. That is, each end of the communication channel may be the transmitting side or the receiving side, but at the same time, the information may have only one transmission direction. This module realizes the mutual conversion between TTL signal and RS485 signal, no need to "receive - send" control, use this module as you operate the serial port as simple, compatible with 3.3V and 5.0V power supply, compatible with 3.3V and 5.0V signal; Imported chip, the performance is very stable, to industrial design standards; anti-interference ability, while more e.
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