AC Input: 100-240V 50/60Hz 1.0A, DC Output: volt 4.5V - amp 1.0A, Max. 4.5W, DC Plug Dimension: 5.5x2.5mm;Inside diameter is positive +,outer diameter is negative - ;(Please note: The positive and negative poles must not be wrongly connected, as this will cause the equipment to not work.) Input: 100-240 V AC 50/60 Hz;Output:DC 4.5V 1A(1000mA) , max. such as 160mA 250mA 300mA 450mA 0.5A 0.85A 1A, We recommend to use less than 80% of the full load. DO NOT OVERLOAD! New Cord, cable core made of copper, 5.5*2.5 mm turning fork attached on the cord + Magnet ring to reduce the noise interference. Safety features: Automatic overload cut-off, over Voltage cut-off, automatic thermal cut-off, short circuit protection. Application:Pay attention to the size. Please make sure it workd for your products. (VERY IMPORTANT)Used for set-top boxes, attendance machines, routers, game consoles, repeater, players, mini speakers, headphones,Security equipment, LED lamps, communication equipment