Input: AC 100~240V, 50/60Hz; Output: DC 3~36V Adjustable, Max 4A 144W; This power supply can provide any 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 currents up to 4A, including 300mA, 500mA, 1A, 1.5A, 2A, 2.5A, 3A, 3.5A, 4A. The LED display shows the output voltage. Do not exceed 4A output current, as this may damage the unit. Avoid overloading. Features: 1. Smooth voltage adjustment via rotary knob. 2. Integrated power switch allows turning off without unplugging. 3. Includes polarity converter cable and alligator clip test leads for broader device compatibility. 4. Built-in safety protections: automatic cutoff for over-voltage, over-current, over-temperature, and short circuits. Operates quietly with no risk of spontaneous combustion, explosion, or fire hazard. Safe for everyday use. The adapter comes with a 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 via screw terminals, ideal for DIY applications. Includes a 6ft power cord for flexible placement. This 144W multi-voltage adapter is suitable for various 3–36V indoor electronics such as LED strips, 3D printers, TV boxes, smart speakers, wireless routers, essential oil diffusers, USB fans, Wi-Fi cameras, USB hubs, hard drive enclosures, DC motors, DC pumps, digital photo frames, DVR/NVR surveillance systems, and more. For indoor use only. (Check your device’s DC jack size before purchase: 5.5x2.5mm fits 5.5x2.1mm). Package Includes: 1 x 3–36V 144W universal adapter 14 x DC connector tips 1 x reverse polarity converter 1 x alligator clip test lead 1 x male DC power pigtail cable Plug Type: EU Plug (suitable for use in Indonesia, Germany, France, Spain, Italy, and other EU regions) Input Voltage: AC 220V Color: Black Material: Plastic Note: Colors may vary slightly due to lighting and screen settings. Measurement tolerance: ±1–3 cm. Only the items listed are included.