The 3.5mm TRS Stereo Audio Socket with Switch is designed for secure audio connections and versatile installation in both PCB circuit boards and panel/chassis mounts. The socket comes with a transparent dustproof cover that allows for internal structure inspection while protecting the components from dust and accidental contact. Its TRS connection with a built-in switch ensures reliable performance, making it ideal for audio devices and electronic systems. The square design makes it easy to handle and install, while the 4-pack provides added value for multiple setups or spares.