【Input】 AC 100V-240V 50/60Hz 0.4A - Universal Wall Plug in. 【Output】 DC 9V 1A 9 Watt Max.. 9V 1000mA 800mA 500mA 300mA are available. 【Connector Type/Size】 It is a barrel plug and the size is 5.5mm x 2.1mm. The Polarity is tip center negative...