DB9 DB15 DB25 DB37 RS232 to DuPont 2.54mm Terminal Adapter Board

DB9 / DB15 / DB25 / DB37 to DuPont 2.54mm Terminal Block Adapter Board

Simplify your serial communication wiring projects with this versatile RS-232 breakout adapter board. Whether you're prototyping, debugging, or building custom electronics, this adapter lets you quickly and cleanly connect DB9, DB15, DB25, or DB37 D-sub connectors directly to standard 2.54mm DuPont pin headers or screw terminal blocks — no soldering of individual wires required.

Certified to CE and RoHS standards, this adapter board is built with quality and safety in mind, operating safely at low voltages (below 50Vac or 75Vdc). Made in Mainland China.

Key Features

• Multi-format compatibility: Supports DB9, DB15, DB25, and DB37 D-sub connectors for maximum flexibility across different projects.
• 2.54mm DuPont pitch: Standard 2.54mm (0.1") header spacing makes it compatible with breadboards, Arduino, Raspberry Pi, and most development boards.
• RS-232 / Serial breakout: Ideal for RS-232 signal testing, protocol analysis, and custom wiring harnesses.
• Screw terminal block design: Secure, tool-assisted wire connections ensure reliable, stable signal paths without accidental disconnects.
• CE & RoHS certified: Meets European compliance standards — no high-concern chemicals, environmentally responsible construction.
• Compact circuit board form factor: Easy to integrate into enclosures, panels, or project boxes.
• No battery required: Purely passive breakout — no additional power supply needed for the adapter itself.

Specifications

Who Is This For?

This adapter board is perfect for electronics hobbyists, embedded systems developers, industrial automation engineers, and anyone working with legacy serial port equipment who needs a clean, reliable breakout solution for D-sub connectors.

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Frequently Asked Questions

Q: What connector types does this DB serial adapter board support?

A: This adapter board supports four common D-sub connector sizes: DB9 (9-pin), DB15 (15-pin), DB25 (25-pin), and DB37 (37-pin). Each variant breaks out its pins to standard 2.54mm DuPont headers or screw terminal blocks, making it easy to interface with breadboards or custom wiring setups.

Q: Is this adapter compatible with Arduino or Raspberry Pi projects?

A: Yes! The 2.54mm (0.1") DuPont pitch is the standard used by Arduino, Raspberry Pi, and virtually all common development boards and breadboards, making this adapter a natural fit for prototyping serial communication circuits.

Q: Do I need any additional power supply for this adapter board?

A: No. This is a purely passive breakout board — it requires no external power supply or battery. It simply routes the pins from the D-sub connector to the terminal block or DuPont header outputs.

Q: Is this board certified for safety compliance?

A: Yes. This adapter board carries both CE and RoHS certifications, confirming it meets European safety and environmental standards and contains no high-concern chemicals.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.