Input: AC 100~240V, 50/60Hz ; Output: DC 9V, 1A/1000mA（compatible with 360mA, 500mA, 750mA, 1000mA,etc.), 15W Max ; DC plug size: 5.5mm x 2.5mm (inside"+", outside"-") . If your device draws 0.5A then 0.5A will be supplied. If draws more than 1A, only 1A will be supplied and power supply will be damaged soon. NEVER OVERLOAD!.10DC Connector size: 5.5x2.1mm, 5.5x3.0mm+Pin, 6.3x3.0mm, 5.5x1.7mm, 4.8x1.7mm, 4.0x1.7mm, 3.5x1.35mm, 3.0x1.1mm, 2.5x0.7mm, Micro-USB, Type-C and DC terminal connector, DC terminal connector .The ac/dc universal power adapter with multi plug sizes can satisfy your different needs..Compatible for most 9V household electrical appliances such as LED light, Radio, Speakers, Pump, Router, Brother label maker, RCBS Charge Master, Arduino UNO, Karoake, Nova Mesh Wifi extenders, Radio CD player, Arduino, portable fan, Breast pump, RCBS reloading scale, Counter lighting, Trash can and more 9V device. This product is an AC to DC adapter, NOT charger!!!It can’t be used to charge electronic devices with batteries, such as laptops. Otherwise, it may damage your device..We focus on high quality and safe power adapters.Built-in multiple safety protection systems.Certified by FCC / CE / ROHS. No noise, no fire hazard, low temperature operation, stable output. Automatic overload cut-off, over voltage cut-off, over temperature cut-off, short circuit protection..After-Sales: We have 30 days money back guarantee, 18 months exchange.If you don’t like our product or don't want it, we will happily accept the return and give you full refund.If there is any question, please feel free to contact us and we'll tackle it for you within 24 hours.The polarity of the adapter--internal positive(“+”), external negative(“-”).