OverviewCompatibility: 0W universal AC/DC adapter switch power V is applicable to most household electronic devices, such as scales, routers, speakers, LED bar lights, lights, closed-circuit television/DVR/security cameras, LCD TV HD TV , household speaker systems, amplifiers, USB hubs, Roku, DIY projects, external hard drives, HD telescopes, Nextbooks, wireless Bluetooth speakers, etc. 0W universal AC/DC adapter switch power input: AC 100~240V, 50/60Hz; Output: DC 3V 4.5V 5V 6V 7.5V 9V 12V adjustable, maximum 2.5A 30W; It can supply any current less than 2.5A, such as 300mA 500mA 800mA 1.2A 1.5A 1.8A 2A 2.1A 2.2A 2.4A 2.5A. The bottom is equipped with a 5V 2.1A USB port. You can connect any standard USB cable to it. (USB cable is not included). The 0W universal AC/DC adapter switch power supply is equipped with an original 5.5x2.5mm tip (internal "+", external "-") and 14 common tips: 6.5x4.4mm+pin, 5.5x2.1mm, 5.5x3 .0mm+pin, 5.0x2.5mm, 6.3x3.0mm, 5.5x1.7mm, 4.8x1.7mm, 4.0x1.7mm and 3.5x1.3mm, 3.0x1.1mm, 2.5x0.7mm, miniature USB, C- type and DC terminal connectors. We have specially added a reverse polarity converter, which will double its application range. 30W multi-function integrated AC/DC adapter is applicable to many small electronic products below 30W of 3~12V, such as LED light bar, light under the cabinet, TV box, smart speaker, wireless router, essential oil diffuser humidifier, USB fan , Wifi IP camera, USB hub, hard disk box, CD player, DVD player, DC motor, DC pump, digital photo frame, DVR NVR monitoring system, etc., no charger! The 0W universal AC/DC adapter switch power supply has a built-in multiple safety protection system. Automatic over-voltage cutoff, over-current cutoff, over-temperature cutoff, and short-circuit cutoff. We focus on producing high-quality and safe power adapters. No noise, no spontaneous combustion, no explosion, no fire hazard, safe use. The 6-foot power cord is easy to use.