---
product_id: 102179924
title: "DC Power Supply Variable 30V 10A, 4-Digital LED Display, Precision Adjustable Switching Regulated Multifunctional Power Supply Digital with USB Interface, Disply with Output Power Lab Grade"
brand: "longwei"
price: "10987 kr"
currency: ISK
in_stock: false
url: https://www.desertcart.is/products/102179924-dc-power-supply-variable-30v-10a-4-digital-led-display
store_origin: IS
region: Iceland
---

# 110V/220V global use 0.01V/A precision 30V/10A max output DC Power Supply Variable 30V 10A, 4-Digital LED Display, Precision Adjustable Switching Regulated Multifunctional Power Supply Digital with USB Interface, Disply with Output Power Lab Grade

**Brand:** longwei
**Price:** 10987 kr
**Availability:** ❌ Out of Stock

## Summary

> ⚡ Power Up Your Projects with Precision!

## Quick Answers

- **What is this?** DC Power Supply Variable 30V 10A, 4-Digital LED Display, Precision Adjustable Switching Regulated Multifunctional Power Supply Digital with USB Interface, Disply with Output Power Lab Grade by longwei
- **How much does it cost?** 10987 kr with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/102179924-dc-power-supply-variable-30v-10a-4-digital-led-display)

## Best For

- longwei enthusiasts

## Why This Product

- Trusted longwei brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Safety First:** Equipped with multiple protection features for safe and reliable operation.
- • **Smart USB Charging:** Charge your devices effortlessly with a 5V/2A USB interface.
- • **Versatile Applications:** Perfect for labs, schools, and DIY projects—lightweight and portable.
- • **Precision Power Control:** Experience voltage and current adjustments with 0.01V and 0.01A accuracy.
- • **Efficient Heat Management:** Intelligent fan and heat grooves ensure optimal performance and longevity.

## Overview

The LONGWEI DC Power Supply is a versatile and high-precision device designed for various applications, featuring a 4-digit LED display, USB charging capability, and multiple safety protections. With a maximum output of 30V and 10A, it is ideal for labs, schools, and DIY enthusiasts, ensuring reliable performance and ease of use.

## Description

Full description not available

## Features

- ◆【High Precision, Wide Range】LONGWEI DC power supply is a professional power supply regulation device that designed with crystal clear, backlit 4-digit LED display of voltage, current, and power. Precise accuracy: 00.01V and 00.01A. You can easily tune it within 0-30V and 0-10A. Very durable and easy to observe even in low light conditions.
- ◆【5V/2A USB interface& Auto Power Calculation】What does the USB do? Please don't worry about run out of power now, you can charge your phone, repair phones and more through the 5V/2A USB interface. The hot selling point is that this power supply can calculate output voltage and current into power intelligently and displays the value on its large screen accurately. 110V / 220V input voltage can be switched and can be used worldwide.
- ◆【High Quality with Essential Safety】Safety is our priority. Grounding wire, The power supply takes the function of limited flow protection, overpower protection, over temperature protection, voltage overload protection. greatly improving its working efficiency and lifespan!
- ◆【Excellent Heat Dissipation】Equipped with a big fan controlled by intelligent temperature control sensor and multiple heat radiation grooves on both sides, Intelligent fan offers excellent heat dissipation effect, which reduces the noise and prolongs the life of product effectively.
- ◆【Various Application】This one weighs less than 3kgs and measures only 11.2 x 5 x 5.7 inches, Applies for laboratory, school, home, electronic repair DIY, aging test and other requirements thanks to complete test probes and output cable with alligator clips. (Buy Now Risk-Free with 30 days Free Of Return,we provide 12-Month after sale service, lifetime technical support. Please feel free to contact us if you have any concerns,we will reply to you to solve your problem in 24H.)

## Product Details

- **Brand:** LONGWEI
- **Color:** Silver
- **Material:** Crystal
- **Connector Type:** USB 2.0
- **Input Voltage:** 2.2E+2 Volts

## Images

![DC Power Supply Variable 30V 10A, 4-Digital LED Display, Precision Adjustable Switching Regulated Multifunctional Power Supply Digital with USB Interface, Disply with Output Power Lab Grade - Image 1](https://m.media-amazon.com/images/I/61M5t+ypPIL.jpg)
![DC Power Supply Variable 30V 10A, 4-Digital LED Display, Precision Adjustable Switching Regulated Multifunctional Power Supply Digital with USB Interface, Disply with Output Power Lab Grade - Image 2](https://m.media-amazon.com/images/I/71N6cyzAvbL.jpg)
![DC Power Supply Variable 30V 10A, 4-Digital LED Display, Precision Adjustable Switching Regulated Multifunctional Power Supply Digital with USB Interface, Disply with Output Power Lab Grade - Image 3](https://m.media-amazon.com/images/I/71LlKqm1KPL.jpg)
![DC Power Supply Variable 30V 10A, 4-Digital LED Display, Precision Adjustable Switching Regulated Multifunctional Power Supply Digital with USB Interface, Disply with Output Power Lab Grade - Image 4](https://m.media-amazon.com/images/I/71eiCjTNkFS.jpg)
![DC Power Supply Variable 30V 10A, 4-Digital LED Display, Precision Adjustable Switching Regulated Multifunctional Power Supply Digital with USB Interface, Disply with Output Power Lab Grade - Image 5](https://m.media-amazon.com/images/I/71B8JrDSZPL.jpg)

## Available Options

This product comes in different **Color** options.

## Questions & Answers

**Q: Can this display 0.001A?**
A: my dear , it display 0.01A.

**Q: turned on unit, no display and c.v. and c.c lights flashing alternately?**
A: Return the unit, sounds like a failing resistor in the control circuit that controls the switching power supply, but not sure….until the power supply is put on the repair bench….best of luck!

**Q: Can this unit interface with a datalogging computer?**
A: This unit does not have any interface outputs to plug into. Unless you use external sensors.

**Q: Can this power supply be powered off/on under load (24vdc 250 watt brushed motor) ?.**
A: If the rush current of your motor does not exceed 10amp I believe that this power supply will work well

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**Shop now:** [https://www.desertcart.is/products/102179924-dc-power-supply-variable-30v-10a-4-digital-led-display](https://www.desertcart.is/products/102179924-dc-power-supply-variable-30v-10a-4-digital-led-display)

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*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-02-26*