ZOSI DC 12V 3A 3000MA US Power Supply for Home Security Camera Surveillance System Ac input: 100~240V 50/60Hz, DC output: 12V 3A 36W. Cord length: 100cm. Connector size: 5.5 mm x 2.1 mm. These POWER supplies are qualified items which are ideal for powering a wide range of 12V DC items, especially for CCTV camera and DVR systems, home security camera Surveillance system. Simplifying the installation process. Simple installation, more safety. One year quality