Input & OutputINPUT:AC 100-240V,50-60Hz;Output:DC 3V-24V Adjustable Continuous,Max 3A 72W TipsIt Come With An Original 5.5x2.5mm Tip And 8 Pcs Frequently Used Tips,It Can Help You Connect Different Equipments. Safety FeaturesOver-Voltage Protection,Short Circuit Protection. Application RangeFits For Most AC/DC Home Appliances. Can Be Perfect For LED Strips Lights,Garden Camera,3D Printer,CCTV Cameras Wireless Router. Be CarefullyPlease Choose Correct Voltage Before Plug It To You Device.Wrong Voltage May Damage Your Device. Center is positve and outside is negative on output tip.We Recommend To Usd Less Than 80% Of The Full Load.