I would not use this one. Check out this instead:

http://cgi.ebay.com/Z4eX-EXTREME-3-Frequency-Hulda-Clark-Zapper_W0QQitemZ3503...

I have one in my collection of zappers.
Stay away of any zapper connected to the power line 110/220VAC, specially this overpriced one.

Hold to a battery only zapper.
If you are new in this fascinating field, read these pages
http://www.ezw.zapperwise.com/e_what_to_look_for.html

http://www.ezw.zapperwise.com/e_pub-exaggeration.html#WallPlug


There is many good zappers under $70.00 to start with

Not only does the "selectable frequency" scale have ZERO relation to the generated frequency, but is has NO POSITIVE OFFSET, whick Clark said was critical.

More important, this is a surplus switching power supply with a really bad zapper circuit pasted into the box between a bunch of high voltage parts. I'm not in the habit of bad mouthing other people's experiments, but this one CAN ELECTROCUTE YOU.

Hello, there :

About this zapper : Zapper 3 Dxxxxxx LCD
This is not the same as the one I have been testing, the "Dxxxxxx Zapper on Ebay", among other names.
Same manufacturer, same "power supply" on the picture...
Only something looking like a voltmeter added to it.

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You will find the final version of the Bench Test for the Dxxxxxx Zapper on this site :
http://www.ezw.zapperwise.com/e_zw_xxxxxxx_zapper_test.html

I'm still shocked by what I have discovered there.
I have sent a preliminary copy to everyone involved in the "confusion of names used"

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Here are the main points of this report :
1_ This is a (surplus?) modified switching power supply circuit that does not comply with any safety rule or agency (UL. CSA, ETL, CE, ...) for the use intended.
2_ The zapper itself is glued in a very dangerous way, in the middle of high voltage components.
3_ The LED pins are not isolated and just over the 110/220V input components.
4_ Wires used around the zapper's PCB are not isolated for a use in such environment.
5_ This device does not comply with the basic Dr Clark's specs
6_ The seller puts a frequency scale on the front that has no accuracy whatever (can we talk about accuracy with 1200% offset?) between the written frequency and the generator frequency.

The worst made, most dangerous, most expensive zapper with an incredible misleading publicity I have ever seen.

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Please, take a look and tell me this is a bad nightmare.

What to do next? I don't know.

This is a too big issue to let go, and at the same time, with Internet involved, people behind this device will continue to sell a potentially lethal device, until someone will have a shocking experience.

And it will be over, for the use of any other zapper!

I want to thanks the people behind this test, and those who tried to cool me down.
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Edited on May 29, 2010 to change link and hide brand name