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  • $23.09
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  • Ships from China.
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    4 Pack DB9 Female to Female RS232 Serial Coupler, D-SUB 9Pin Serial Port Gender Changer Extender Adapter for PLC, Scanner, POS & Industrial Serial Devices

    • Standard DB9 Female to Female Coupler: Link two RS232 male serial cables together to extend serial connection length easily
    • Gold-Plated Anti-Oxidation Contacts: Minimize signal loss and electromagnetic interference, stable serial data transmission
    • Compact Mini Inline Design: No bulky protrusion, fits narrow gaps behind equipment panels and cabinets
    • Universal RS232 Compatibility: Works with scanners, POS machines, PLC controllers, testing instruments and industrial equipment
    • Plug & Play Driver-Free: No extra power or software required, durable 4-pack for multi-device serial wiring layout
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    This 4-pack DB9 female-to-female serial gender changer is a practical RS232 cable extender for all D-SUB 9-pin serial devices. It connects two male-ended serial cables to expand transmission distance without replacing original cables.

    All internal pins adopt gold-plated conductive treatment to reduce signal attenuation and noise interference, effectively preventing data loss, identification failure and communication lag during long-hour industrial operation.

    The lightweight compact structure avoids bulky obstruction on equipment ports, and the sturdy plastic shell withstands frequent plugging and unplugging. No complicated installation steps needed, just plug and play directly.

    Wide application for industrial CNC machinery, POS cash registers, barcode scanners, laboratory testing equipment and legacy server serial port maintenance.

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