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This DB9 female solderless breakout board is designed for RS232 D-SUB serial port conversion, adopting spring terminal crimp structure to eliminate soldering work and simplify wiring operation. Each 9-pin port is independently led out with clear layout, convenient for serial circuit debugging, line expansion and equipment modification. Made of high-quality material with stable conductivity and anti-loose terminal design, it ensures reliable signal transmission for a long time. Perfectly compatible with all kinds of RS232 serial communication devices, ideal for industrial control, PLC connection, laboratory testing and serial project DIY use.