1、USB power supply, no need for external power supply: Compatible with USB1.0/1.1/2.0, RS-422, RS-485 standard, can convert USB signal and protocol frame into balanced differential RS-422 or RS-485 signal and UART protocol. The frame can realize the bridgi 2、Adopts TVS and thermistor dual lightning protection and surge protection technology: It can effectively resist lightning strikes and surge voltage generated on the line for various reasons, and maintain a very small interelectrode capacitance, ensuring h 3、The converter with internal no delay automatic transmission and reception conversion: The unique I/O circuit automatically controls the data flow direction without any handshake signal (such as RTS, DTR, etc.), and does not need jumper setting to achieve 4、Support for point-to-point, point-to-multipoint communication: Point-to-multipoint converters can allow connection of 32 RS-422 or RS-485 interface devices, data communication rate 300-128000bps, with power indicator lights and data flow indicators to in 5、Lightweight and Convenient - Small size, light weight, simple and practical.