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4.87 out of 5
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  • 10/09/2019

    Looks like is good! Thanks!

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  • 17/01/2019

    thanks for my orders safety.

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  • 12/08/2020

    Nice booster. Using it to replace high voltage batteries in my antique Geiger Counter!

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  • 22/04/2018

    Can somebody explain what does it mean by the following line from description - " if you want to add current, please put insurance below the transformer replaced the 0-ohm resistor, maximum 50mA, but does not recommend increased.)" BTW it came very soon . very pleased.

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  • 02/05/2021

    Tested and reached the desired voltage

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  • 12/07/2020

    Good

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  • yyaono
    JP
    19/03/2020

    Cospa is the best. Easy to use and easy to adjust voltage in VR is also attractive. The high voltage output terminal is small and convenient.

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  • 09/03/2020

    Great high voltage booster, ideal for Geiger Müller tubes.

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  • 15/01/2020

    I am very satisfied and fast delivery thanks

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  • 12/01/2020

    Nice product.

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