Universal Charger with protection of over voltages, over current, short circuits and over temperature, bring much safety. AC/DC adapter has selectable outputs: 3V / 4.5V / 5V / 6V/ 7.5V / 9V / 12V. AC 100v~240V 0.25A 50 / 60Hz; Note: inner Positive(+), outer Negative(-). Polarity is irreversible. NEW CORD, cable core made of copper, 5.5*2.1 mm turning fork attached on the cord & magnet ring to reduce the noise disturbance. Cable Legth: 3.6ft（110cm）. USB Port 5V 2.1A: Can used for charging any 5v devices, such as mobile phone, portable charger ect. More Selections: This adapter includes 8 DC tips which are compatible with most polular AC/DC products, such as mobile, kindle, wireless receivers, Set-top box, Security Product, Routers, Radios, printers, LED Strip Lights, electronic gizmos, replacing charger cords, rowing machine, GPS, USB Charging Camera, Speakers, 3V to 12V Small Home Electronics, etc.. Save more space for you, one for most electronic device. How to USE: 1. Connect the correct adapter tip and make sure that it's firmly attached to the dc input port of your device. 2. Set the right DC output voltage. There are 7 options for you, DC 3V / 4.5V / 5V / 6V / 7.5V / 9V / 12V. 3. Connect the adapter to the electrical socket. 4. Now you can power up your device. How to Check Your Device Required Voltage and Power Usually, your device required voltage will be printed beside the power port or beside the battery Slot. Your device required power watt is the value of required voltage multiplies required amps. For example, if your device asked input voltage 6v 2a, then the required power is 12w. You need to find a charger that is equal or more than 12w. Not compatible with laptop or other over 30W high power equipments. If you want to get 12V 2.0 A via the 8 DC tips, please don't use the USB port at the same time, or the current could not reach to 2.0A. Note: The adapter will have a fever while two devices charged at the same time. 【Multi-Voltage Adapter】- Input: AC 100v~240V 0.25A 50/60Hz, Output: 3V/4.5V/5V/6V/7.5V/9V/12V - MAX 2000 mA. FULL PROTECTION of over Voltages/ over Current/ short Circuits/ over Temperature. 【Upgraded Version Multi-Tips】- This ac adapter has 8 selectable dc tips. Which can be used for various appliances. Ideal for MP3, Portable DVD, Router, Radio, Speaker, CCTV camera LCD, electronic toys, ect. There is ALSO a Micro USB Plug so this item can be used as an adaptor for many smart phones and cameras. 【Max 2A output】- Maximum Current of up to 2a - If your device requires less power, such as 200ma, 300ma, 400ma, 500ma, 600ma, 750ma or any other up to 2000ma it will work with this adapter with a matching tip and proper voltage/polarization.