The power supply and signal are fully isolated, with stronger anti-interference ability and use USB to RS485/RS232 converter allows PC users to connect their RS-485//RS-232 devices By attaching the converter to a PC, it will not be necessary to open the chassis or turn off the PC to install the hub Since the power is derived from the USB port, there are not any cumbersome power adapters. This makes the converter especially suitable for PLCs, printers, systems and industrial Industrial-grade protection: TVS transient suppression protection, electrostatic ESD protection, surge protection, AB signal line short connection and short connection protection with the power supply (short connection does not burn) Multi-system support hot-plugging, support for Win98/CE/2000/2003/2008/XP/WIN7/WIN8/WIN10/VISTA/LINUX/MAC OS X system, USB interface can be hot-plugging Automatically identify and control the direction of data transmission without any handshake signals (e.g. RTS, DTR, etc.) No jumper settings can be realized without mode switching to ensure compliance with existing communication software and interface hardware Specifications: Power supply: USB 5V Transmission distance: 1200m (9600bps condition) Chip program: CH340 Communication protocol: pure hardware device, not subject to protocol restrictions Baud rate: 921600bps, supporting intercommunication support higher baud rate Protection: TVS transient suppression protection, electrostatic ESD protection, surge protection, AB signal line shorting and shorting with the power supply protection (shorting does not burn) Temperature range: -40℃-80℃ Support system: support for hot-swap, support win98/CE/2000/2003/2008/XP/WIN7/WIN8/WIN10/VISTA/LINUX/MAC OS X system, USB interface can be hot-swapped Weight: 16g Size: 70*27*13mm