ATOMSTACK Laser Engravers Super Sale | Get $55 OFF & $30 OFF & More Coupons


Mouse over to zoom in

Power Supply LED Digital Display Voltage Regulator Voltmeter

Power Supply LED Digital Display Voltage Regulator Voltmeter

4.0-40V to 1.25-37V Step-down Converter Power Module

Price on the app only:

Already have TOMTOP APP

Scan the product's code to buy directly!

Note: Please update TOMTOP App to the latest version.


Download freely and enjoy extra offers!

Ship From:
  • China Warehouse
Please select a warehouse
Usually will be shipped in business days hours
The request failed! Please try again.
Sorry, it seems that there are no available shipping methods for your location.Please contact us for further assistance.


Ship to

United States
Stock in: china

For each user order no more 5 item(s)

Special discount has ended

Please note each user for only 1 item(s)

Preorder Add To Cart Out of Stock

Arrival Notice

if the goods arrival in 90 days,we will inform you by email!


Arrival Notice

Notification Subscription Success!

if the goods arrival in 90 days,we will inform you by email!

Notification Subscription Failed!

Error appeared,Please try again later!

Arrival Notice

Buyer Protection

  • Full Refund If you don't receive your order
  • Full or Partial Refund , If the item is not as described Learn More >
Easy to use and install, has a long service life. It needs DIY and can improve your hands-on ability.

With voltmeter display and voltage meter can be self-calibration, the voltmeter error is ±0.05V, and the range is 0~40V.
Touching the button to switch the measurement input or output voltage, and the indicator light shows which voltage is being measured, and saving the settings, even if it is powered off and restarted.
The voltmeter can be turned off, and it can be easily achieved by tapping the left button when it is not needed.
With wiring connector, can use easily without solder iron, and can keep the bonding wire wiring point.
High conversion efficiency, with an average of 88% (efficiency is related to input voltage, output voltage, current, and voltage difference).
With reverse connection protection, reverse connection does not burn.
With overheat protection and short circuit protection.

Main material: PCB
Color: blue
Output voltage: 1.25-37V
Input voltage: 4.0-40V
Output current: 3A
Output power: 20W
Voltmeter error: ±0.05V
Conversion efficiency: 88%
Item size: 120 * 61 * 34mm / 4.7 * 2.4 * 1.3in
Item weight: 22g / 0.8ounce
Package size: 130 * 65 * 38mm / 5.1 * 2.6 * 1.5in
Package weight: 25g / 0.9ounce

Package list:
1 * Voltage Regulator Module


Post a new topic

Please note that TOMTOP Forums are a community for all communicating and getting help each other. There will be some enthusiastic friends participate in your discussions. Of course TOMTOP customer service (with tomtop customer service icon) response is guaranteed ,which is the same way you contact us at

open this forum in full page
Customer Reviews

There are no customer reviews yet.

  • 5 stars
  • 4 stars
  • 3 stars
  • 2 stars
  • 1 stars

Share your thoughts with other customers and get Tomtop Points, the first 5 reviews get DOUBLE Tomtop Points!

Write a Customer Review
Be the first to review this item

Top Sellers More>

Please activate your account first. We will resend the activation email to help you complete your registration.

Recently Viewed


TOMTOP use cookies to give you the best shopping experience. If you continue to use our services or create a new account, we will assume that you agree to our  Privacy Policy.

Tell us which product you want to Social Saving

Click the refresh verification code