It works with 12V devices less than 6W, such as Security Cameras/DVR/NVR/LED strip lights,etc. It works with 12V devices less than 500mA/0.5A,such as 100mA/200mA/300mA/500mA. DC 12V 0.5A/500mA Power Supply Adapter with 1.2 meters/3.9ft cord length. Plug Size: 5.5mm x 2.1mm. Polarity: Center positive(+).Model: CS-1200500. Certificate: UL,FCC, ETL, RoHS, WEEE. Warranty: 2-Year & 30-Day Return without Reason. Specification of power adapter 1.Input : AC110-240V 50-60Hz 2.Output Voltage: 12V 3.Output Current: 0-500mA 4.Maximum Power: 6W 5.Plug Size: 5.5mm x 2.1mm 6. DC line length: 1.2meters Smart Protection 1.Short Circit Protection 2.Temperature Protection 3.Over Load Protection 4.Over Voltage Protection 5.Over Current Protection 6.Over Charge Protection Certificate 1.UL,FCC, ETL, RoHS, WEEE. 2.Efficiency Level: VI. Application 1.CCTV security system :Camera, DVR, NVR 2.Led strip light 3.Router 4. ADSL cat 5.Hub switch 6.IR Illuminator 7.Cable Modem 8.External Hard Drive 9.Other DC 12V,0-500mA devices Package 2x DC 12V 0.5A Power Supply