DTECH DT-9005B RS232 Straight-Through DB9 Male-to-Female Serial Cable – Multiple Lengths (1.5m/2m/3m/5m) for Modem, Router & COM Port Devices

An RS232 male to female cable is the standard choice when you need to extend a serial COM port connection — the male DB9 plug seats into the existing female port on your PC, router, PLC or industrial device, while the female DB9 socket at the other end accepts any male DB9 connector further down the line. The DTECH DT-9005B is a straight-through male-to-female serial cable built for professional and industrial use, with the internal quality — tinned copper core, nickel-plated connectors, environmentally friendly PVC jacket — that distinguishes it from commodity cables in reliability and longevity.

What Makes a Male-to-Female RS232 Cable Different?

RS-232 cables are available in three gender configurations: male-to-male (M-M), male-to-female (M-F) and female-to-female (F-F). The M-F configuration of the DT-9005B serves as a serial extension cable: one end extends the reach of a female DB9 socket while the other provides a female port for downstream devices. This is the correct cable when you need to lengthen an existing serial run without changing connectors, when your PC’s COM port is a female DB9 and your device’s cable ends in a male DB9, or when you’re routing serial signals over longer distances within a machine or control cabinet. As specified by the TIA/EIA RS-232 standard, the DB9 (DE-9) connector is the universally adopted interface for PC and industrial RS-232 serial ports — both ends of the DT-9005B comply fully with this standard.

Straight-Through Wiring Explained

The DT-9005B uses straight-through line sequence, meaning Pin 1 on the male DB9 connects directly to Pin 1 on the female DB9, and so on for all 9 pins. This is the correct wiring for extending or bridging standard RS-232 signals without modification. It supports three common device wiring scenarios: straight-through, 23 crossover and full crossover — depending on the equipment on each end. Always verify your device’s wiring requirements in the manual before purchasing. If your application requires null-modem or crossover wiring, a different cable type is needed.

Construction Quality That Delivers

Inside the DT-9005B, the tinned copper core reduces oxidation at the conductor level, maintaining consistent signal quality over years of use. Bare copper corrodes and increases resistance over time — tinning prevents this, particularly in environments with fluctuating humidity, such as server rooms, factory floors and outdoor enclosures. The nickel-plated DB9 connectors provide firm mechanical engagement and resist the surface corrosion that degrades bare-metal connectors in industrial settings. The environmentally friendly PVC outer jacket is both flexible enough for tight cable routing and robust enough to handle the abrasion of daily use.

Plug-and-Play on Any Platform

No drivers or software are needed. The DT-9005B supports the RS-232 serial protocol natively and is recognised immediately by Windows, Linux, industrial SCADA platforms and embedded controllers. Connect it between your COM port equipment and power on — it works.

Length Options for Every Installation

The DT-9005B is available in 1.5m, 2m, 3m and 5m. The 1.5m suits desktop workstation setups; 3m and 5m cover rackmount distances, control panel installations and equipment bays where the serial device sits across a room or behind a partition.

Typical Applications

Extending PC COM ports to reach rack-mounted equipment, connecting modems and serial routers to host controllers, linking barcode scanners and label printers in POS environments, bridging PLCs to SCADA terminals, and integrating industrial sensors and access control panels with serial host systems.

For applications requiring RS-232 to RS-485 protocol conversion, or serial-to-Ethernet bridging, explore our complete industrial serial product range at bam.ae — including RS232/RS485 converters and serial Ethernet servers.

Specifications Table