Hi power 12V DC 2A CCTV Security Camera Power Supply Adapter with 4 (2.1mm) Channel Connectors Port THE HI POWER ADVANTAGE:12V DC Regulated CCTV Power Supply,4 Camera Power Supply 2 Amp 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 2 amp 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 12v2a 24w 4way, DC connector 2.1*5.5*12mm ,our power supply have 12-month warranty and friendly customer service.