Hi Power Security Camera Power Supply 12V DC 0.5A Regulated CCTV Switching 100V-240V AC to DC 2.1mm x 5.5mm Plug Power Adapter THE HI POWER ADVANTAGE:12V DC Regulated CCTV Power Supply,1Camera Power Supply 500mA Total Output. DIAMETER OF CONNECTOR: Interior 2.1mm ; exterior: 5.5mm ,Four 2.1mm DC Output Center Positive AC INPUT: 100V to 240V, DC OUTPUT:12 volt at 0.5amp rating,Univeral AC input /Full range,High Efficiency,and High reliability. OUTPUT PROTECTION:OCP/OVP/OPP/SCP,100% full load burn-in test. WHAT YOU GET: Hi power cctv security power supply 12v0.5A 6w 1way, DC connector 2.1*5.5*12mm ,our power supply have 12-month warranty and friendly customer service.