Description:WIDELY USEDUsed for LED light strips, security equipment, routers, wireless doorbells, ADSL cats, electronic scales, wireless routers, tablet computers, set-top boxes, closed-circuit monitoring, LCD display, etc.ADJUSTABLE VOLTAGEThe output voltage can be adjusted manually. Adjustment: 3V, 4.5V, 5V, 6V, 7.5V, 9V, 12V, to meet more needs.COMES WITH 6 ADAPTERS PLUGComes with 6 adapters plug: 2.5mm/0.12inch, 3.0mm/0.13inch, 3.5mm/0.14inch, 4.0mm/0.16inch, 5.0mm/0.2inch, 5.5mm/0.22inch.WITH USB PORTWith a USB mobile phone charging port, it is more convenient to charge the mobile phone.DC PIN TYPEThe polarity can not change, the center is the positive pole(+) and the outside is negative(-), the size of the two pin with the joint is different.Specification:Material: plasticColor: blackPlug: EU, USInput: AC 100V-240V 0.25A 50/60HzOutput volt: 3V, 4.5V, 5V, 6V, 7.5V, 9V, 12VUSB port: 5V/2.1ADC plug size(outer diameter x inner diameter): 2.5 x 0.7mm/0.1 x 0.03inch, 3.0 x 1.1mm/0.12 x 0.04inch, 3.5 x 1.35mm/0.14 x 0.05inch, 4.0 x 1.7mm/0.16 x 0.07inch, 5.0 x 2.1mm/0.2 x 0.08inch, 5.5 x 2.5mm/0.22 x 0.1inchPackage:1 pc x AC/DC adapter6 pcs x Adapter plugNote:1. Due to the light and screen difference, the item& 039;s color may be slightly different from the pictures.2. Please allow 0.5-2 cm differences due to manual measurement.