SMAKN&reg; Dc 12v 2a Switching Power Supply Adapter 100-240 Ac AC Input: 100V to 240V, DC Output: 12 volt at 2 amp rating, UL Certified Type: Regulated switching power supply with 2.1mm x 5.5mm plug, center positive High quality commercial grade AC to DC power adapter for manufacturer of all type Please confirm the plug size before purchase. Tips: voltage must equal to device requirement, amp rating must equal or greater than requirement