... communication distance is 1200m;7\ Address: 1-255,is chosen by button;8\ Protocol: MODBUS RTU;9\ Data format: Start bit is ... 1, data bits is 8, none checkout, stop bit is one;10\Baud rate: 1200bit ... bit/s, 9600 bit/s, 19200 bit/s,is chosen by button;11\Communication indication: RX/TX;12\Electric isolation: Communication ...