Plug-in power supply for electronic devices with a DC connection, such as portable CD players, radios, string lights, toys, digital photo frames, tools, routers, and desk lamps, as well as battery-operated devices. It is ideal as a replacement or additional power supply. The automatic overload and overheating protection, as well as short circuit protection, safeguard the connected devices. With reversible polarity, you have flexibility depending on the requirements of the electronic device.