---
product_id: 116459844
title: "DC Power Supply Variable 30V 5A, （Precision 00.01V，0.001A）4-Digital LED Display, Precision Adjustable Regulated Switching Power Supply Digital with Alligator Leads US Power Cord"
brand: "longwei"
price: "S$31"
currency: SGD
in_stock: false
reviews_count: 8
url: https://www.desertcart.sg/products/116459844-dc-power-supply-variable-30v-5a-precision-00-01v-0
store_origin: SG
region: Singapore
---

# DC Power Supply Variable 30V 5A, （Precision 00.01V，0.001A）4-Digital LED Display, Precision Adjustable Regulated Switching Power Supply Digital with Alligator Leads US Power Cord

**Brand:** longwei
**Price:** S$31
**Availability:** ❌ Out of Stock

## Quick Answers

- **What is this?** DC Power Supply Variable 30V 5A, （Precision 00.01V，0.001A）4-Digital LED Display, Precision Adjustable Regulated Switching Power Supply Digital with Alligator Leads US Power Cord by longwei
- **How much does it cost?** S$31 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/116459844-dc-power-supply-variable-30v-5a-precision-00-01v-0)

## Best For

- longwei enthusiasts

## Why This Product

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

## 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 0.001A. You can easily tune it within 0-30V and 0-5A. Very durable and easy to observe even in low light conditions.
- ◆【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 2kgs and measures only 2.7*8.6*6.3inches, Applies for laboratory, school, home, electronic repair DIY, aging test and other requirements thanks to complete test probes and output cable with alligator clips.
- ◆【What You Get】1 x K305D DC power supply, 1 x output power cord, 1 x Input power cord, 1 x test probes, 1 x User manual.(If you are not satisfied with the product you received, please feel free to contact us and we promise help you solve the problem.)

## Images

![DC Power Supply Variable 30V 5A, （Precision 00.01V，0.001A）4-Digital LED Display, Precision Adjustable Regulated Switching Power Supply Digital with Alligator Leads US Power Cord - Image 1](https://m.media-amazon.com/images/I/61BEN-eiPwL.jpg)
![DC Power Supply Variable 30V 5A, （Precision 00.01V，0.001A）4-Digital LED Display, Precision Adjustable Regulated Switching Power Supply Digital with Alligator Leads US Power Cord - Image 2](https://m.media-amazon.com/images/I/61Oj5GhhMTL.jpg)
![DC Power Supply Variable 30V 5A, （Precision 00.01V，0.001A）4-Digital LED Display, Precision Adjustable Regulated Switching Power Supply Digital with Alligator Leads US Power Cord - Image 3](https://m.media-amazon.com/images/I/71O7+EK8hcL.jpg)
![DC Power Supply Variable 30V 5A, （Precision 00.01V，0.001A）4-Digital LED Display, Precision Adjustable Regulated Switching Power Supply Digital with Alligator Leads US Power Cord - Image 4](https://m.media-amazon.com/images/I/71dLIuBAsmL.jpg)
![DC Power Supply Variable 30V 5A, （Precision 00.01V，0.001A）4-Digital LED Display, Precision Adjustable Regulated Switching Power Supply Digital with Alligator Leads US Power Cord - Image 5](https://m.media-amazon.com/images/I/717IAswFAHL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐ 







  
  
    Nice For Electronics
  

*by S***A on Reviewed in the United States 🇺🇸 on June 12, 2019*

I got this to use with certain electronics projects and things and for certain physics labs for classes. Didn't have much in the way of instructions but with Youtube and the internet available its not that big of an issue. It's also not the most complicated thing to use in the first place. With my voltmeter I found the power supply displays/measurements to be pretty accurate. A little smaller than I imagined, which is nice. I'll have fun using it with a bunch of various things. A solid buy if its something that you'll use a lot. Can't speak to much on longevity since I just recently bought it but hopefully it lasts a long time.

### ⭐⭐⭐⭐⭐ 







  
  
    Accurate and easy to use  Works great as a supply for a hot wire foam cutter
  

*by M***E on Reviewed in the United States 🇺🇸 on November 14, 2019*

Bought this supply to power a hot wire foam cutter, works great in this application.  I checked the DC output with my Digital Volt Meter  and found no more than a 0.05V difference.  The voltage and current adjustment are 5 turn knobs which allow me to easily make adjustments to one tenth of a volt/amp.  The current limit works well and is perfect for use with my foam  cutter.  I set 7 to 9 volts turn down the current adjustment to zero then connect the cutter.  After that its just a matter of turning up the current  between 2 - 2.5 Amps .  The output voltage changes as necessary to maintain the current setting which keeps the cutter at consistent temp

### ⭐⭐⭐⭐⭐ 







  
  
    Great powersupply for tech repair !
  

*by R***D on Reviewed in the United States 🇺🇸 on November 21, 2019*

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     great power supply ! I Use this power supply to fix computers and this is holding up nicely. The fan turns on when this is on active and turns off when not use. I was able to fix about 10 laptops with this . It came with many plug . It gave me a free multimeter cable . This is absolutely worth the time to try this out . Just amazing!

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-02-21*