Simple Null Modem Cable without handshaking: direct communication transfer data between 2 Data Terminal Equipment DTE devices using RS-232C serial communication protocol.

If your equipment require 3 wire null modem cable (data lines TX, RX and GND signal ground ), 15 foot 9 pin serial cable adapter enables you to add peripherals to an application or replace the cables.
(Note: this male to male crossover cable work by only wiring the transmit and receive lines crossed - TX to RX, RX to TX; other control lines like RTS CTS are not cross-linked, not a loopback handshake null modem cable, neither a full handshake null modem cable.)

Connecting RS-232 devices for serial console access:for the proxySG, advanced secure gateway, content analysis, reporter, management center hardware devices, touchscreen, telescope, vinyl cutting machine, GPS, network equipment, radio transceiver, stereo system subwoofer, speaker set, sewing machine, weather station or controller to a remote control camera...

Black DB9 serial cable male to male is with gold plated pins for superior corrosion resistance, ensuring a solid basic null modem cable connection.
The connectors are equipped with a pair of thumbscrews for securing the plug to the female socket.

DB9 RS232 cable male to male is shielded with standard Foil-Al layer shielding as most crossover serial cables do, it fits for most of jobs. But if there are big mess of interference at your work area, you may need a special heavy duty DB9 cable that features copper braided + AL-foil double shielded layer.

Connectors: DB9 to DB9 (Male-Male)
Pinout Configuration: Basic crossover of TX and RX lines, suitable for simple data transfer
Interface Surface: Nickel-plated
Pins Surface: Gold-plated
DB9 Cord Diameter: 6mm
DB-9 Cord Length: 15 ft (5 meter)
What's Included:
1 x 9 pin Serial Cable DB9 Null Modem
1 x Manual