Product parameters: Input voltage: 100V-240V 50-60Hz Output voltage: 5V Stable current: 1A DC connector: 5.5 * 2.5mm/2.1mm Power cord length: 0.9m/3ft. Power polarity: internal is positive, external is negative, internal ㈩ external ㈠ Output voltage accuracy: 95% Load regulation: 4% Product Highlights 1.Working silently: It emits a subtle sound of less than 25 decibels during charging, which makes it very quiet, so there is no need to worry about noise. 2.Intelligent management chip: Intelligent management chip with protection function. The chip adds an automatic protection mechanism. When it encounters overcurrent, overload, and short circuit, it will automatically cut off power to prevent accidents. 3.intelligent protection: Worry-free power supply: stable output voltage, high use efficiency, filter function, multi-layer protection, wide range of use, LED work indicator. Application: The 5V 1A switching power adapter is suitable for electronic products with a voltage of 5V(must be 5V), a current not higher than 1A(0.5A or 1A), and a plug of 5.5x2.5mm/2.1mm, such as: power supply, hard disk box, TV box, switch, camera power supply, LED light bar power supply, wireless router, Switches, surveillance cameras and other equipment below 5V 1A, You need check the current and voltage and plug size, before purchasing it, please. Notes on using the power adapter: 1.Do not use in humid or high temperature environment. 2.Be careful not to squeeze the power adapter cable and cause the outer insulation sleeve of the power cable to break. Package including: Package Includes: 1x 5V 1A Power Supply US Plug with 3ft. Power Cord, 1x DC female connector.