Digital Adjustable DC Power Supply 3V~24V 3A 72W with LED Voltmeter Display & Free 5.5×2.1mm Female Connector Cable for CCTV LED Strip Bench Repair

The Digital Adjustable DC Power Supply 3V~24V 3A 72W is a versatile, high-power adapter designed for a wide range of electronics projects, LED lighting, CCTV systems, and bench repair applications. With an adjustable output voltage from 3V to 24V DC and a maximum current of 3A (72W total power), this power supply delivers reliable, flexible power for devices requiring different voltages. The LED voltmeter display provides real-time voltage readout, and the included free 5.5×2.1mm female connector cable ensures easy connection to your project.

At the heart of the adapter is a high-efficiency switching power supply circuit that converts AC mains input to a stable, adjustable DC output. The output voltage is set via a rotary selector switch or potentiometer, with the LED voltmeter display showing the current voltage setting in real time. This makes it easy to dial in the exact voltage you need — whether 3.3V for a microcontroller, 5V for a USB device, 12V for CCTV, or 24V for industrial equipment.

The 3A maximum output current and 72W total power provide ample power for:

• LED strips — Power 5V, 12V, or 24V LED strips

• CCTV cameras — Power multiple 12V security cameras and DVRs

• LED displays and signage — Power LED modules and displays

• Bench repair — Test and power circuits during troubleshooting

• Arduino and microcontroller projects — Power boards and peripherals

• Audio equipment — Power amplifiers and audio devices

• Network devices — Power routers, switches, and modems

• Testing and measurement — Bench power for circuit testing

The adapter features a standard 5.5×2.1mm DC barrel jack output and includes a free 5.5×2.1mm female connector cable for easy connection to your project. The LED voltmeter display shows the current voltage setting, and the compact design makes it suitable for bench use, travel, and equipment integration.

The adapter includes built-in protection circuits including overcurrent protection, short-circuit protection, and over-temperature protection, ensuring safe and reliable operation.

Important Note: The 3A maximum output current is shared across all voltage settings. At higher voltages (e.g., 24V), the maximum current may be limited by the total power rating (72W). Always verify the voltage and current requirements of your device before connecting. The output voltage should be set before connecting sensitive devices.

Whether you are powering an LED strip, testing a circuit on the bench, or replacing a lost adapter, the Digital Adjustable DC Power Supply 3V~24V 3A 72W provides a flexible, reliable solution. It is suitable for individual makers, repair technicians, and businesses purchasing in bulk for product development or commercial applications.

Features

• Adjustable output voltage — 3V to 24V DC via rotary switch or potentiometer

• 3A maximum output current — High-current capability for demanding loads

• 72W total power — High-power output for multiple devices

• LED voltmeter display — Real-time voltage readout for precise adjustment

• Standard 5.5×2.1mm DC barrel jack output — Widely compatible connector

• Free 5.5×2.1mm female connector cable included — Ready to connect to your project

• Built-in protection — Overcurrent, short-circuit, and over-temperature protection

• Compact and lightweight — Suitable for bench, travel, and equipment integration

• Wide application range — LED strips, CCTV, LED displays, bench repair, Arduino, audio

• Easy voltage selection — Rotary switch or potentiometer for quick adjustment

Technical Specifications