[High Quality Chip] Adopt industrial grade chip FT232, SP3232, support USB to RS232, stable and reliable communication, good compatibility, baud
rate support range: 150K bps. ^^ [Wiring Optimisation] Adopting USB-B interface and DB9 male connector, smooth plugging and unplugging, sturdy and reliable, complimentary USB cable. ^^ [Protection Upgrade] DC power isolation and digital isolation chip, five on-board LED indicators, power, transceiver, flow control indicator, can visually display the circuit status. ^^ [Detailed Optimisation] USB terminal with electrostatic ESD protection circuit, effectively preventing electrostatic damage, protect the back-end circuit and equipment, RS232 terminal RXD, TXD, RTS, CTS pins with overcurrent protection, electrostatic protection circuit ^^ [High quality components] ABS housing, DIN rail mounting, with lug positioning holes, easy installation and operation, lightweight and practical, stable transmission