Q-See 4-Way Splitter w/ 12V, 3A (3000mA) Power Supply, MPN CS-1203000 Input Voltage / Amperage: 100-240V / 1.5A (1500mA) Output Voltage / Amperage: 12V / 3A (3000mA) Connection Tip Size: 2.1mm interior, 5.5mm exterior (CCTV standard) UL Approved?: Yes Power Star efficiency level: 5 (V)