ATC-108 photoelectric isolation interface converter is compatible with RS-232C, RS-422, RS-485 standards and capable of converting single and RS-232 signal into RS-422 or RS-485 signal of balanced. The built in photoelectric isolator can offer 3500V isolation voltage and the rapid Transient Voltage Suppressor (TVS) can effectively inhibit lighting and ESD, provide 600W lightning strike and surge power on each line and prevent lightning strike and common code interface. Connect PC, IPC, or portable computer via a DB9 female connector at RS-232 interface, and connect RS-422, RS-485 and via convenient 7 bit plug-in terminal.