Power supply: USB 5V Transmission distance: up to 1200 meters (9600bps) Chip solution: CH340E Communication protocol: pure hardware device, not subject to agreement Baud rate: up to 256000bps, supporting mutual transmission to support higher baud rate The power supply and signal are completely isolated, and the anti-interference ability is stronger Protection: transient suppression protection, electrostatic ESD protection, surge protection, short AB signal line and short-circuit protection with power supply (short-circuit without burning) Temperature range: -40 C - 80 C Support system: support hot swap, support for win98 for for 2000 for 2003 for 2008 for XP for WIN7 for WIN8 for WIN10 for VISTA for LINUX for system, USB interface can be hot swapped Automatically identify and control the data transmission direction, without any handshake signals (such as , DTR, etc.) without jumper settings to achieve mode conversion, to compliance with the existing communication software and interface hardware. Different batches, the color of the PCB board inside the converter is random, don't accept the specified color; the computer display is different, the converter color . Colour: blue Material: PCB+plastic+metal Size: 70x27x13mm Package Contents: 1 * USB To RS485 RS232 Converter Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.