The Industrial serial port Optical Fiber Modem directly modulated the RS-232/422/485 electrical signal into an optical signal transmitted over an optical fiber, The utility model has the advantages of small size, convenient and flexible use. The product breaks through the conflict between the traditional interface communication distance and communication speed, and at the same time, solves the problems of electromagnetic interference, ground ring interference and lightning damage, greatly improves the reliability, security and confidentiality of data communication and can be widely used In various industrial control, process control and traffic control and other occasions, especially for banking, power and electromagnetic interference environment has special requirements departments and systems.

General-purpose high-performance optical isolation RS-232 / RS-422 / RS-485 converter, through the switch settings, can support RS-232 / RS-485 bidirectional conversion ,can also support RS-232 / RS-422 bidirectional conversion. The wall-mount design supports DIN-rail standard rail mounting, easy installation, in addition to using single-terminal power supply technology to achieve optical isolation, the RS-232 terminal with independent external power supply, and RS422/485 terminal with DC/DC isolation Transform to provide power, communication signals using high-speed optocoupler isolation. This design can effectively avoid the project due to the sharing of power supply isolation failure, known as the real "isolation."