Need a three wire null modem serial extension cable (TX, RX and GND) that is long enough to control your legacy equipment, so you can program a outdoor digital sign from the comfort of indoor office? This 15ft 9 pin male to female serial adapter (cross wired between TX and RX line) enables you to extend original serial to serial cord and move the device to a far corner where you need it to reach. 9 pin serial cable male to female is with gold plated pins for superior corrosion resistance ensuring a solid connection.For RS232 devices below (partial): Telescope vinyl cutting/ sewing machine GPS radio transceiver subwoofer/speaker set weather station controller to cameraNote: 1.Shielded with standard Foil-Al layer shielding as most cables do, it fits for most of jobs. 2.It?s not a 15 pin VGA cable that connects monitor to laptop, is only for RS 232 communication port to interface one system to another system.Specifications: Usage: for extending a 9 pin serial male to male cable, or connect it to an old serial port device along with a serial to USB converter Connectors: DB9 to DB9 (Male-Female) Cable Diameter: 6mm Cord Length: 15 ft (5 meters)What?s Included: 1 x RS-232C Serial Male to Female TX/RX crosslinked Cable (Black) 1 x User Manual