9V 1A 1000mA Power Supply AC to DC Power Adapter Charger 5.5mm x 2.1mm Replacement Power Supply Adapter

*Note:The device only applies to 9V1A polarity is inside(+),outside:(-)Perfect work for arduino uno 3,if you wantuse for other device please make sure your device need 9V 1A plug polarity is(-,+).Warning: Not not working for the other device,not not suit for Idena CD player(not suit).