DB9 Female to Pin Header

From the shop's description

DB9 Female to Pin Header This adapter provides a standard DE-9 (commonly called DB9) female port linked to through-hole pin headers. It simplifies integration of RS-232/RS-422/RS-485 signals into prototype boards, custom enclosures, or test fixtures. By mapping the nine D-sub pins to an accessible header layout, it enables clean wiring, solderless connections, and easy signal interrogation. Features This connector is the same as you find on some boards, computers and similar small form factor equipment. Ship with a strip of male header pins that are soldered on the bottom of the adapter; you want to plug this into a breadboard. Pin header pitch distance 2.54mm. The board has 2 M3 size holes that can be used for mounting if desired. Specifications Parameter Value Connector DB9 female D-sub (DE-9 shell) Pin Header 10 × 2.54 mm pitch solder-pin header Screw Terminal 2-side screw-block (variant) Signal Compatibility RS-232, RS-422, RS-485 Mounting breadboard or panel-weld bracket Typical PCB Size 33mm x 25mm PINOUT Applications Prototyping serial communications with breadboards or custom PCBs. Converting DB9 signals for use with screw-terminal wiring. Custom control panel or lab setups requiring accessible D-sub interfaces. Intermediate breakout for field debugging and signal monitoring. Package Contents 1x DB9 Female to Pin Header Adapter.