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voltage blue

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voltage blue Customers Reviews

  • Really easy of use

    posted by JimmyHendrix

    Just two wires for power an measuring is perfect. Nice bright blue LED displayFits in any panel or dashboardCheap and useful (by the price of a pair of LED displays you get a digital voltmeter)
    Precision is in average. I've compared with my DMM and found a 0.2v difference when measuring a 12v car battery, so it is enough highly precise for what is supposed.
    REALLY easy-to-use: just connect the wires and you get fastly the voltage. This is the cheappest DVM i've ever owned.
  • Usefull gadget

    posted by iggie

    This digital meter is great to determine the output voltage and current that is being supplied to your device. Seems accurate and dependable.
    I am curious to know how much power it consumes but is probably minimal. Nice size to keep in with other tools or USB adapters.
    If you need or want to know the output voltage and current supplied to your USB devices get this meter.This digital meter is great to determine the output voltage and current that is being supplied to your device. Seems accurate and dependable.
  • Ok unit for the money

    posted by buddax

    Work as expected. No real problems so far.The unit can obviously also be used as an DC/DC transformer if you bypass the rectifier and use a DC power source.
    Remember that the bottom side has exposed solder points! So be aware where you place the unit while the power is on.
    Seems like a fair deal if it don't burn out on me anytime soon.
  • Works well

    posted by lorenzog91

    Purchased for construction of a power supply.Makes perfect case.In French: Acheté pour construction d'une alimentation.Fait parfaitement l'affaire.
    Large size.In French: Taille importante
    Perfect for the use I want to do.I recommend this product which is very good work.The display is accurate and aesthetically pleasing.In French: Parfait pour l'usage que je veux en faire.Je recommande ce produit qui fait tres bien son travail.L'affichage est precis et l'aspect agréable.
  • Good instrument for testing USB power supplies and cables

    posted by Doug0

    Good form factor for a device that can measure both USB voltage and current. Appropriate accuracy for this application.Can also measure voltage loss in cables as more current is used - this will show you which cable has the least losses so your device will charge faster.Can show power supplies that are out of spec - I have one that generates 6.25 volts.Can show which power supplies will deliver their rated current. Very few USB power modules will deliver their rated current while maintaining 5 volts.
    If you have a bunch of inexpensive USB charging power modules like me, this is a very useful device to tell which power modules have the best performance and which ones are not adequate.
    Very useful device in a nice small package to optimize your charging setups and ensure your expensive toys are not being supplied voltages that are too high.


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