The product is developed by us to meet the increasing security demand for the internetwork data transmission.?It realizes data transmission through physical isolation, for purposes of higher network security and coexistence of network transmission and independence.?It is an internetwork secure communication device with two microcomputers subject to serial communication only. It is connected between a user network and another untrusted network to isolate them to make the user network more secure and independent from the untrusted network.Its essential functions include network isolation, data exchange, automatic data analysis, and data saving.It automatically analyzes abnormal data, save the transmitted data and form logs.