AC to AC Wall Adapter Transformer 16 Volt @ 1000mA Black Straight 2.1mm Female Plug Output Voltage (VAC) : 16 Output Current (mA) : 1000 Output Connector ID x OD : 2.1mm x 5.5mm Size H x W x D (inches) : 2.5 x 2.2 x 1.9 Input Voltage (VAC) : 120