Product parameters:Input voltage: AC100-240V 50~60HZ (worldwide)Input AC interface: EU plug US plugOutput voltage: (DC) 12VOutput current: 3AOutput voltage accuracy ±0.5% (no load)Power supply polarity: inside positive outside negative, inside (+) outside (-)DC interface: 5.5*2.5 and 5.5*2.1mmColour: BlackCondition: Brand new authenticWide input range and high voltage accuracy Applicable: display monitoring security audio speaker stage lighting development version mobile hard disk switching power supply wireless router monitoring ADSL cat, mini TV, mobile DVD, TV box, wireless audio and video equipment, charging equipment, MP3/MP4, small desk lamp, switch, game console , telephones, lanterns, cameras, monitoring equipment, controllers and other household equipment. 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 it. If the temperature of the adapter is too high, please stop using it and check the reason.※ It is strictly forbidden to use in humid or high temperature environment