Features!100% Brand new!Multi voltage output selectable. This is AC 100-240V 50/60Hz to 7 selectable DC voltages (3V/4.5V/5V/6V/7.5V/9V/12V) charger, you can select required voltage freely by the little key.!Multi interface adapter. This AC/DC adapter comes with 6 interchangeable tips (2.5*0.7mm, 3.0*1.1mm, 3.5*1.35mm, 3.5*1.5mm, 5.0*2.1mm, 5.5*2.5mm), which makes it fits most of AC/DC home appliances. We especially add a 5V 2.1A USB Port, so you can use it to supply power to your power bank, smart phone, etc.!Applications. This 30W universal power supply adapter can fit for lots of compatible small household electronics, such as tablet, scales, wireless receivers, printers, game consoles, routers, speakers, CCTV camera, LED strip lights, GPS, etc.!Built-in safety protections. Certified by FCC CE ROHS. Multiple safety system protects the AC to DC power supply adapter very well. The built-in smart IC will turn off it whenever it is overload, over-voltage, overheat or short circuit and protect your devices from overcharge.!!Specifications!Type: 3-12V adjustable voltage power supply!Material: ABS+PC fireproofing marterial!Rated Power: 30W!AC Input: 100-240V 0.25A 50/60Hz(Worldwide)!DC Output: 3V/4.5V/5V/6V/7.5V/9V/12V adjustable!DC Plugs Size: 5.5x2.5mm, 5.0x2.1mm, 4.0x1.7mm, 3.5x1.35mm, 3.0x1.1mm, 2.5x0.7mm!USB Output: 5V 2.1A!Plug Type: US/UK/EU plug!Power Cord Length: 1.2m/3.94ft!Color: Black!!Attentions!1. Please allow tiny size deviations due to human measurement.!2. All the DC plugs for this DC adapter are Center Positive: inner positive(+), outer negative(-), not compatible all devices. Some device requires inner Negative(-) and outer positive(+) (totally opposite), please check carefully before ordering!!3. Please choose the correct voltage for your device before plug it to power. Wrong voltage may damage your device. (Set the accurate voltage by the little key, if the arrow is in the middle of the two voltages may also lead to no output issue).!!Package Included!1 x 30W Universal Power Adapter!6 x DC Connector Tips!1 x Voltage Switch Key