Product parameters:Input voltage: AC100-240V 50~60HZ (worldwide)Input AC interface: EU plug US plugOutput voltage: (DC) 12V 24VOutput current: 1A 2A 3A 4A 5AOutput 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 authenticWide input range and high voltage accuracy Applicable: booster pump motor fan monitoring security audio speaker stage lighting development version mobile hard disk switching power supply wireless router monitoring camera ADSL cat, mini small TV, mobile DVD, TV box, wireless audio and video equipment, charging equipment, MP3/MP4, small table lamp, Switches, game consoles, telephones, lanterns, cameras, monitoring equipment, controllers and other household/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 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