Durable construction: copper core with goldplated connections for durability, plug resistance, and reliable contact. Uses allcopper terminals for efficient signal transmission. Reliable connection with multiple tailpipe sizes: includes a crimp ring set in four sizes (5 mm, 6 mm, 7.5 mm, 8.5 mm) to ensure the cable is securely held and maintains good contact during use, reducing the risk of dropped wires or poor connections. Easy to install: no soldering required. Installation only needs a small screwdriver and a wire stripper. Signal connectors are clearly labeled on both sides of the board for quick, error wiring. Flexible and versatile: easier to set up than soldering wires to a plug. Suitable for testing pinouts, cables, or any device with an RS232 interface. Enables you to create custom cables with DB15 connectors. Use scenarios: Lab testing and development: quickly verify RS232 pinouts and assemble custom DB15 cables for testing devices. Field service and maintenance: damaged RS232 leads without soldering, ensuring reliable performance onsite. Prototyping and diagnostics: build and test custom RS232 cabling to check compatibility and pinouts before permanent wiring.