[Industrial Chip] Adopt industrial chip FT232, SP3232, high speed communication is stable, reliable, good compatibility, baud
rate support range: 150K bps. ^^ [Wiring Optimization] Adopt USB-B interface and DB9 male connector, smooth plugging and unplugging, sturdy and reliable, complimentary data cable for USB connection. ^^ [Upgraded protection] With independent power isolation and signal isolation circuitry, onboard five LED indicators, power, transceiver, flow control indicators, for visual indication of circuit status. ^^ [Detailed Optimization] USB terminal with electrostatic ESD protection circuitry, effective prevention of electrostatic damage, to protect the rear circuitry and equipment, RS232 terminal RXD, TXD, RTS, CTS pins with overcurrent protection, electrostatic protection circuitry. ^^ [High Quality Components] Customized PCB version, machine mounted, highly encapsulated isolation devices, suitable size, with fixing holes.