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4.73 out of 5
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  • 10/03/2021

    Good product and really great quality. Works perfectly.

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  • 06/04/2020

    looks good I posted pictures to show, it's 11 cm X 9. bye from Italy and be strong and protect Vs covid-19

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  • 25/03/2021

    I just took over the generator. The design looks nice, but so far I have it has not been put into service. Manual missing!

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  • 23/09/2020

    Quick delivery. All nicely packaged. I'll check the operation today.

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  • 30/11/2020

    goods

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  • 10/09/2020

    Delivered in time . Liked that fact. It seems to work ( led flashes).

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  • 17/11/2020

    The Schumann wave depends on the frequency accuracy. The frequency in this product is generated by an R/C network on a 555 device. Frequency accuracy is therefore not perfect and susceptible for power supply voltage variations. The circuit requires a very stable voltage source and accurate tuning. Measurements: Vin 5V, freq 7,834Hz (after tuning) 5.5V, freq 7,9Hz 4,6V freq 7,75Hz The circuit draws approximately 240mA

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  • 17/09/2019

    works ! the case case was simple to install: 1) 4 screws go through one side of clear plastic base 2) 4 nuts get fully threaded onto 4 screws finger tight 3) slide circuit board onto 4 screws, seats against nuts 4 ) install plastic end piece (switch and PWR jack side 5) thread the 4 ‘long’ nuts onto screws while verifying switch and PWR jack hole alignment 6) assemble remaining plastic pieces, four more screws then go through the top and into the inside ends of the long (spacer) nuts blue light blinks about 8 HZ when unit connected to 5V and switched on

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  • 03/11/2019

    as described; it is generating 7.68 Hz ... i know the Schumann resonance stories...but i don't know for what is good ...i will test the long time plants/human effect .. :)

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  • 18/02/2020

    Timely inside. The mounting is careful which side is up, but it is for a layman. The blue light is annoying, as it is constantly blinking. I cannot say anything about its effect, but I will have to say something about it in a few weeks' time.

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