Pin Headers & Socket Headers are the most basic and universal detachable connectors in electronic systems. They consist of pin headers with metal pins and matching socket headers with corresponding jacks, and realize electrical connections and signal/low-power transmission between PCBs or between PCBs and modules through plugging and unplugging. Their core advantages include extremely low cost, simple structure, flexible use and easy soldering and replacement. Common specifications are classified by pin pitch into 2.54mm (the most universal), 2.0mm, 1.27mm and 1.0mm, by number of rows into single-row, double-row and multi-row types, and by mounting method into through-hole, right-angle and SMD types. They are widely used in development boards, industrial control equipment, home appliances, instruments and meters, and various electronic prototype products.