1HALF DUPLEX MODE: This converter adapter support USB and RS485 half duplex signal transmission, transmission distance up to 1200 meters 2FUSE AND CHIP: USB to RS485 converter onboard 500mA self recovery fuse and transient, and CH343G chip driver, safe and reliable, you can use with confidence 3DIODES PROTECTION: USB to RS485 converter adapter adopt prevent lightning and non static design to suppress diode and realize circuit protection 4WIDE APPLICATION: Industrial USB to RS485 converter support scanners, printers and other types of digital equipment, support a variety of compatible 5STABLE AND RELIABLE: USB RS485 converter has the advantages of prevent overvoltage and overcurrent, long distance transmission, low delay and low power consumption in signal transmission, stable and safe communication 1 x USB to RS485 Converter