Input: AC 100~240V, 50/60Hz ; Output: DC 3~36V Adjustable, Max 4A 144W ; It can supply with any voltage between 3~36V, such as 3V 4V 4.5V 5V 6V 9V 12V 16V 19V 21V 24V 26V 28V 30V 32V 36V, etc and any amp less than 4A, such as such as 300mA, 500mA,1A, 1.5A, 2A, 2.5A, 3A, 3.5A, 4A LED display will show the output voltage, if the current drawn exceeds 4A, the power supply will be damaged soon. Never overload! 1.The knob can be adjusted more evenly. 2. Increase the off gear to turn off the power without pulling the plug. 3. Add a polarity converter cable and test lead which compatible with more devices, doubles its range of application. 4. Built-in multiple safety protection systems. Automatic over voltage cut-off, over current cut-off, over temperature cut-off, short circuit cut-off. No noise, no spontaneous combustion, no explosion, no fire hazard, safe to use. It comes with an 5.5x2.5mm tip and 14pcs frequently used 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, 3.5x1.35mm, 3.0x1.1mm, 2.5x0.7mm, Micro-USB, Type-C and DC terminal connector. Can be applied to almost all commonly used electronic devices. You can screw wires onto it easily, perfect for DIY projects. 6ft long power cable makes it convenient to use. The 144W multipurpose AC/DC adapter fit for many 3~36V small household electronics such as LED strips, 3D printer, TV Box, smart speaks, wireless routers, essential oil diffuser humidifier, USB fan, Wifi camera, USB Hub, hard disk box, DC motor, DC pump, digital photo frame, DVR NVR surveillance system etc.For indoor use only. (Check dc jack before buy: 5.5x2.5mm, compatible 5.5x2.1mm) Package includes 1 x 3~36V 144W universal ac/dc adapter, 14 x DC tips, 1 x reverse polarity converter, 1x alligator clip test lead, 1x male DC power pigtail cable. We focus on producing premium quality and safety power adapters. Plug Type:EU Plug,it applies to Indonesia, Germa, France, Spain, Italy and so on Voltage: AC220V Colour:Black Material:plastic Package Contents: 1 set x universal power supply Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.