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The product is shipped WORLDWIDE from Sydney, Australia.

4.8 - 30V 3-Digit 7-Seg Voltmeter Display is a cheap and bright voltage display. It is able to display voltage measurement from 4.8V to 30V with an accuracy of 0.2V at below 12V and 0.02V above 12V. It comes with 3 digit seven segment display.

A very simple yet useful display to monitor your voltage reading or measurement. Simply connect the red wire to the positive supply, and black to negative ground. The display has a microcontroller that will read the voltage, compare it to a stable reference and output the voltage to the 7-segment display. Applicable for the project that requires voltage display from 4.8V to 30V.


  • Input Voltage: DC 4.8-30V (Input voltage higher than 32V will damage the product)
  • Minimum voltage display : 2.2V (dim light)
  • Operating Current: < 23mA
  • Refresh Rate: 300ms
  • Accuracy at lower than 8V: 0.2 V
  • Accuracy at higher than 8V: 0.02V 
  • Seven segment display colour: Red
  • Red Colour Wire: Vin
  • Black Colour Wire: Ground (GND)
  • Wire length (Red and Black) :15cm
  • Dimension (mm) : 33 (L) x 15 (W) x 10 (H)
  • Weight : 10 g


How To Use: 

  1. Connect the seven-segment wire to your voltage supply, battery or voltmeter.
  2. Connect the Red Wire (Positive) to Vcc or Vin.
  3. Connect the Black Wire (Negative) to ground.
  4. When the connection is done, turn on your supply (if there is a switch)  if no switch, the seven-segment will automatically display your supply current output voltage.


  • Please be careful and ensure that your supply does not exceed the operating voltage because it could damage your Seven segment voltmeter display.
  • No polarity protection, please check the polarity.


Packing List:

  • 1 x 4.8 - 30V 3-Digit 7-Seg Voltmeter Display
  • All the order are shipped within 2 business days. 
  • Products are either shipped from China or Australia. Item locations are mentioned on the product page.
  • Customers will receive tracking code if they have selected the 'shipping method with a tracking code'.
  • Returns are accepted if the customers return the items within 1 month to our address in Australia. If the item has been shipped from China, the customer still has to return the item to Australia. 
  • Return post fees have to be paid by customers. If the product is defective, we will pay the shipping fees.


Shipping fees for Australian addresses(Item Location: Australia):

  • Standard Post- using Australia Post: US $5.95 ~ AU $9.00 
  • Express Post: US $9.95 ~ AU $15.00


Shipping fees for international addresses (Item Location: Australia):

  • Standard Post with tracking code: US $17.50 ~ AU $26.50
  • Express Post with tracking code: US $36.50 ~ AU $55.00


Shipping fees for Australian and international addresses:(Item location: China):

  • Registered post with a tracking code: US $3.95 ~ AU $6.00 
  • Express Post with tracking code: US $25.00 ~ AU $38.00 


How long does it take to reach the USA, UK, Germany, Australia Canada and other EU countries?  

From China: If we ship from China, the delivery time can be from 7 working days to 15 working days. See the proof on the images below. US based orders are delivered more quickly than other countries.

Most of the USA, UK, Canada, Australia, and Germany  based orders are delivered within 7 days. However, because of customs related processes, it can sometimes take up to 15 days.  Check out all the shipment proof images on this page. 


From Australia: If you have chosen standard post, you will receive your parcel in 3-5 days (in Australia) and 5-7 days (outside Australia)

If you have chosen economy post, you will receive your parcel in 3-5 days (in Australia) and 15-25 days (outside Australia)


What is the proof that we really ship and they are delivered ?

 Check out all the shipment proof images on this page. 


Where do we ship from ? 

We ship our products from Australia and China depending upon what you purchase. BuildCircuit's original products are shipped from Australia. 

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