DX » Community » Reviews » 3.3" LED 4-Digit Red Display 3.5~7V 0~3A USB Power Charger Current Voltage Tester - Blue + Silver
Customer’s impression:
excellent Useful Easy to use Perfect! cheap
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  • posted byphotojazz on 11/10/2015

    Impression:excellent;

    This may be entitled a "Voltage Tester" and for engineers it is, but for travellers it is better known as a "USB condom". Often, black hat hackers will install their own USB ports at airport and other public charging stations that are connected to their own hidden systems. When you plug your in... Read more

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  • posted bytechneut12 on 10/27/2015

    Impression:excellent,Useful,Easy to use;

    Happy with it

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  • posted bysevehv on 04/30/2015

    Impression:excellent,muy preciso;

    LO HE ADAPTADO A MI CONGELADOR Y ASI SIEMPRE VEO QUE TEMPERATURA HAY EN SU INTERIOR.

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  • posted byjuanantoniosalg on 11/21/2014

    Impression:Useful,Easy to use;

    utensilio que realiza la funcion esperada y no necesita configurar es enchufar y listo, funciona ok, no hay mas.

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  • posted byPLYZing on 09/29/2014

    Impression:Useful,Easy to use,disagnostic tool;

    With this thing you can troubleshoot the quality of the cables and if they match your phone. As well as you can test USB chargers, usb ports, usb cables that are available. This device proves that not all chargers are equal and not all cables are equal. Best way to figure out why your is charging... Read more

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  • posted byHobzik on 09/01/2014

    Impression: cheap,Easy to use;

    Pros: + the display is well readable with large red led digits + it works easily, just connect between you charger (or PC) and USB devide (mobile) + can be used as separate Voltmeter (only in the range 3 - 7V) + the price is excellent Cons: No cons so far! Other thoughts: I ordered another one as... Read more

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  • posted bypvhttz on 08/16/2014

    Impression:excellent;

    What a wonderfull nifty device. Very tiny and 100% usefull ! It is powered by the USB host and has the same connector for output. It measures the USB voltage and amperage. The LCD toggles between thoose values, so it doubles the value :-) For the price you can't miss, especially if you tried to I... Read more

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  • posted byKoozwad on 08/02/2014

    Impression:Useful;

    Item received after 13 days(in NL). It works perfectly and is VERY handy for me as I plan to buy a Raspberry Pi to use as a media centre, so I need to know the amps of USB devices since the Pi only supports up to 300mA per USB port as far as I know. This was a good value buy at only 3.83 USD time... Read more

    Perfect purchase! Perfect purchase! Perfect purchase!

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  • posted byFatsGW on 07/24/2014

    Impression:excellent;

    Pros: easy to use. easily detect usb current draw and voltage Cons: bulky. might need to use a usb extension cable for more space if using in tight spaces. only reads up to 2 decimal places Great product for measuring current draw of USB devices.

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  • posted bycegavantes on 07/24/2014

    Impression:Perfect!;

    IT´S A VERY UTIL TOOL, I USE IT TO TEST MY POWER BANK, YOU CAN USE TO CHECK THE POWER LOAD AND YOUR GADGET´S ENERGY CONSUMPTION WHILE THERE ARE LOADING IF YOU HAVE A POWER BANK OR SIMILIAR, AND YOU WANT TO BE SURE THE POWER IS OK, THIS IS YOUR GADGET!!! SMALL!! UTIL!

    VERY UTIL

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