Plastic,copper Imported 12v Power Supply with Switch: Our 12v DC power supply comes with a switch for convenient on/off control Max Power 24watt: Our DC power supply is mainly designed for small DC 12V LED lighting products that draw any amount of power up to 24 watts; Make sure the power of your light is no more than 24 watts. Otherwise, the LED light will blink or not work since the power supply is overloaded and can not offer enough power for the light Safety Circuit Protection: Our power supply features built-in protection against short circuits, over-current, over-voltage, and overload, ensuring the safety of your devices Reliable DC 12V Output: 110v to 12v converter(from AC to dc converter), making it compatible with various DC 12v LED lighting applications; NOT for other low voltage devices Convenient Female Plug Connector: The package includes a female plug adapter with a diameter of 2.1mm (interior positive pole) and 5.5mm (exterior negative pole); it can connect LED strip light with bare wires without soldering; Please note that it is not compatible with 5.5x2.5mm plugs 12volt Power Supply Replacement: This 12V power adapter is a perfect replacement for various 12V devices, such as fish tank LED lights, LED neon signs, aquarium lights, under-cabinet lights, CCTV Cameras, IR cameras, massage and more. Before purchasing, please check the original adapter's output parameters or contact us for any questions or concerns The package includes a 12-volt power supply with switch, a female power plug, an adhesive tape for fixing the power adapter cable