Power Specs: Output: DC 12V 4A / 4000mA 48W, 5ft Cable, DC interface size: 5.5mm x 2.1mm (and compatible with 5.5mm x 2.5mm) Adapter 12v perfect replacement for 2A / 2.5A / 3A / 3.5A: If your previous power supply was less than 4A then this will be a perfect replacement as amperage is not forced Built-in Protection System: Short circuit protection, overload protection, over-voltage protection, protecting your devices Wide application: 12V AC/DC adapter is widely applied to CCTV Cameras, LED strip lights, BT speakers, GPS, webcam, USB-Hub, wireless router, TV Box, wireless IP Camera, home phone system, recorder, scanner, DVR, hard disk box, LED pixel light, DIY projects and more 12V household electronics less than 48W What You Get: 1 * DC 12V 4A power supply and 5.5mm x 2.1/2.5mm connector Specifications: Input: 100 - 240V AC 50/60Hz 1.2A Output: DC 12V 4A Max Wattage: 48W Connector size: 5.5mm x 2.1mm & 5.5mmx2.5mm Plug DC Cable Length: 5ft The adapters Connector: inside positive (+) . outside negative (-) Application:KAKULO adapter is compatible with most CCTV Cameras, LED strip lights, BT speakers, GPS, webcam, USB-Hub, wireless router, TV Box, wireless IP Camera, home phone system, recorder, scanner, DVR, hard disk box, LED pixel light, DIY projects and more 12V household electronics less than 48W.