Product parameters:Input voltage: AC100-240V 50~60HZ (global)Input AC interface: EU plug US plug UKplug AU plugOutput voltage: (DC) 9VOutput current: 3AOutput voltage accuracy ±0.5% (no load)Power supply polarity: inside positive outside negative, inside (+) outside (-)DC cable length: 1 meterDC interface: 5.5*2.5 and 5.5*2.1mmColour: BlackCondition: Brand new genuineWide input range and high voltage accuracy Applicable: monitoring security audio speaker stage lighting development version mobile hard disk switching power supply wireless router monitoring camera ADSL cat, mini TV, mobile DVD, TV box, wireless audio and video equipment, charging equipment, MP3/MP4, small desk lamp, switch, game console, Phones, lanterns, cameras, surveillance equipment, controllers and other home/portable devices. Precautions for use:※ Please do not use it beyond the rated input voltage and output current range, and it is strictly forbidden to short-circuit the output interface (voltage).※ Please pay attention to heat dissipation and ventilation when using. If the adapter temperature is too high, stop using it and check the cause.※ It is strictly forbidden to use in humid or high temperature environment