The power adapter provides 12V DC power sources for the surveillance security camera, The power adapter convert 110-220V AC sources to 12V DC sources with a maximum current of 5A, 12V DC Power Adapter for Surveillance Cameras, Input: 110V/220V AC, Output: 12V DC 9 Port, Max Draw: 5A, Support up to 9 Cameras, AC Power Cord, Package Includes, (1) PA-1059 12V/5A Power Adapter for Surveillance Cameras, (1) 1-9 Splitter Cable for Cameras, SKU: ASI4838