Industrial communication module: Adopt USB to RS485 industrial communication module. Two-way communication half-duplex serial port. CH340 chip industrial, automatically identify and control the direction of data transmission without any handshaking signal (such as RTS, DTR, etc.). Mode transition can be accomplished without jumper settings, ensuring compliance with existing communications software and interface hardware. Working voltage:DC 5V. Communication distance: 1200 meters (max at 9600 bits/s). Supported operating systems: XP/WIN7/WIN8/WIN10/VISTA/ LINUX/Mac OS X. The computer cannot recognize our CH340 converter without the driver. You need to download the CH340 driver software. If you don't have a suitable driver, please contact us, we will provide you. Wide range of applications: It is widely used in data acquisition, signal conversion, device repair, product development.