Input: AC 100-240V, 50/60Hz; Output: DC 3-36V adjustable, up to 4A 144W. This power supply can deliver any output voltage between 3V and 36V, such as 3V, 4V, 4.5V, 5V, 6V, 9V, 12V, 16V, 19V, 21V, 24V, 26V, 28V, 30V, 32V, 36V, and current up to 4A, including 300mA, 500mA, 1A, 1.5A, 2A, 2.5A, 3A, 3.5A, 4A. The LED display shows the output voltage. If the current exceeds 4A, the unit will shut down automatically. Do not overload.Features: 1. Smooth voltage adjustment knob. 2. Includes an on/off switch for convenient power control without unplugging. 3. Comes with a polarity converter cable and alligator clip test leads for broader device compatibility and expanded application range. 4. Built-in multiple protection systems: over-voltage, over-current, over-temperature, and short-circuit protection. Operates quietly and safely with no risk of spontaneous combustion, explosion, or fire hazard.Includes one 5.5x2.5mm connector tip and 14 commonly used DC 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. Compatible with most common electronic devices. Easy wire connection for DIY projects. 6ft power cord for flexible placement.This 144W all-in-one AC/DC adapter is suitable for various 3-36V household electronics, including LED strips, 3D printers, TV boxes, smart speakers, wireless routers, essential oil diffusers, USB fans, Wi-Fi cameras, USB hubs, hard disk enclosures, DC motors, DC pumps, digital photo frames, DVR/NVR surveillance systems, and more. For indoor use only. (Check device DC jack before purchase: 5.5x2.5mm; compatible with 5.5x2.1mm.)Package includes: 1 x 3-36V 144W universal AC/DC adapter, 14 x DC tips, 1 x reverse polarity converter, 1 x alligator clip test lead, 1 x male DC power pigtail cable. Designed to deliver high quality and reliable performance. Plug type: EU plug.