12 Volt Power Supply - 2.5 Amp UL Listed (12V 2.5A DC) Adapter UL Listed 12 Volt 2.5 Amp DC Power Supply Adapter (24 Watts) High quality power adapter Input:100/240 Volts AC 50-60 Hz. Output: 12V DC 2.5 Amp UL Listed (12V, 2.5A) Connector Size: 5.5mm (Outside barrel) x 2.5mm (Inside Barrel). Center: Positive. UL/CE Listed Power Supplies with 2 Year Warranty