Features： 1、INDUSTRIAL PROTECTION: TVS transient suppression protection, ESD protection, surge protection, AB signal line short circuiting and power short circuiting protection (short circuiting without burning) 2、TRANSMISSION DISTANCE: Transmission distance up to 1200 meters(9600bps under the test), support baud rate 921600, much higher than 115200, pairs of mutual transmission using baud rate is higher 3、MULTIPLE SYSTEMS SUPPORT HOT PLUG: Support for win98, for CE, 2000 2003 2008, for XP, for Windows 7, for WIN10, for VISTA, for LINUX, for OS X, hot swappable USB interface 4、FLEXIBLE SWITCHING: Automatic identification and control of data transmission direction, without any handshake signal (such as RTS, DTR, etc.), without jumper setting to achieve mode conversion, to ensure compliance with the existing communication software and interface hardware 5、WITH LIGHT: Equipped with TXD, RXD indicator. Pure hardware device, not restricted by protocol. External supply of 5V power, there is a fuse current limit Specification： Item Type: Serial Port Adapter Material: ABS Color: Blue Power Supply: USB 5V Transmission Distance: Maximum approx. 1200meter / 3937ft(9600bps condition) Communication Protocol: Pure hardware device, not limited by the protocol Baud Rate: Up to 921600bps, supporting mutual transmission support higher baud rate Temperature Range: -40℃-80℃ External supply of 5V power, there is a fuse current limit Package List： 1 x Serial Port Adapter