Product parameters:Input voltage: AC100-240V 50~60HZ (worldwide)Input AC interface: EU plug US plug UK plug AU plugOutput voltage: (DC) 12VOutput current: 2AOutput voltage accuracy ±0.5% (no load)Power supply polarity: inside positive outside negative, inside (+) outside (-)AC line length: 0.5 meters (need to lengthen contact customer service)DC line length: 1 meter (need to lengthen contact customer service)DC interface: 5.5*2.5 and 5.5*2.1mmColour: BlackCondition: Brand new authenticWide 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, Various household/portable devices such as telephones, lanterns, cameras, monitoring equipment, controllers, etc. 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