3 Volt 1.5 Amp Power Adapter, AC to DC, 2.1mm X 5.5mm Plug, Regulated UL 3v 1.5a Power Supply Wall Plug AC Input: 100V to 240V, DC Output: 3 volt at 1.5 amp rating, UL and ROHS certified Type: Regulated switching power supply with 2.1mm x 5.5mm barrel barrel 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