Product specificationInput: AC100V-240V 50/60Hz. Output: DC9V~2A Max power 18W DC plug size: 5.5mm x 2.1mm Net weight: about 0.1kg Polarity: inner positive/outer negative. Safety & Durability Over voltage/ over current/ short circuit/over loaded/surge protection system loaded, without fan and noice, CE/FCC/DoE VI certified high quality. Product will be tested before packing and send to FBA, there’s seldom defective ones, if any problem found after the delivery please contact our customer service, we’ll deal with it within 24 hours, thank you in advance and wish we can serveice you better. Compatible DeviceUniversal application for LED Light, Wireless Router, ADSL Cats, Musical tools, Switches, Security Cameras, Audio/ Video Power Supply etc. and other devices which is powered by DC9V(0~2A) power supply. WarningPlease check the DC socket type, power consumption(must not exceed the Max output of the adapter), polarity of the device before ordering, or it may cause problem or d