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Stetzerizer Microsurge Meter

4.2 out of 5 stars 27 customer reviews
| 13 answered questions

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  • Measures high frequency transients and harmonics on wiring
  • Ignores 50/60 Hz signal
  • Simple to use, just plug it onto electric outlet
  • Works on both 60 Hz/120 Volt and 50 Hz/240 Volt systems.
  • Recommend readout level is less than "50"
3 new from $98.99

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Technical Details

  • Brand Name: Graham Stetzer
  • Model Number: GS-M300-A
  • Item Weight: 2 pounds

Product Description

50/60 Hz electric and magnetic fields are not the only pollution emitted from wiring in buidings. High frequency (KHz and MHz range) signals can be injected from appliances or lighting, or may even enter the wiring through the main power supply. Some people find this high frequency "pollution" very irritating.

Don't just take our word for it. You can now check for this pollution yourself! This special meter can be plugged into your electrical outlets to determine the levels of EMF high frequency pollution at home or office both. The meter works equally well on standard North American outlets (2-prong, 3-prong) and GFI outlets. It can also be used with surge suppressors, extension cords, or power strips. The readout gives an indication of how much high frequency noise is in the wiring at the outlet where the meter is located. Extremely easy to use and reliable. Re-usable. Can be used on 50/60 Hz, 110-230 V systems. Has North American Style Plug but can be used with socket adapters for other countries.

If high readings are found, optional plug-in filters are available which will remove these potentially harmful signals from the wiring. Contact seller for details.


Product Information

Product Dimensions 12 x 8 x 7 inches
Item Weight 2 pounds
Shipping Weight 1 pounds
ASIN B002P4HL10
Item model number GS-M300-A
Customer Reviews
4.2 out of 5 stars 27 customer reviews

4.2 out of 5 stars
Best Sellers Rank #704 in Electronics > Accessories & Supplies > Computer Accessories > Surge Protectors
#1,112 in Electronics > Accessories & Supplies > Power Protection
#10,505 in Electronics > Accessories & Supplies > Home Audio Accessories
Date first available at Amazon.com October 2, 2001

Warranty & Support

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Customer Reviews

Top Customer Reviews

Length: 0:48 Mins
Just when you thought your house was safe.....it might feel like that. But pollution from dirty power has been around for some time. The utility companies have been aware of this problem for years, though they do not talk about it much. I am electrically sensitive (I am affected (headaches, joint pains etc) by cell phones, wifi and so on) so I have done my research on this.

I bought the meter; my home was around the 80 to 90 mark, which is not that high. I installed some filters which brought it down to 20/25 units. The manufacturers suggest that below 50 is safe, professor Magda Havas says it needs to be below 40.
This is not something you buy and then put away in a drawer and forget about.

The key is to use the meter regularly because anything electrical (particularly dimmer switches, flat screen TVs ) can cause pollution. Being as we are forever buying new appliances, and your neighbors are too the readings will vary over time. I recently found a shower light that was giving me a reading of over 600 GS units because of a faulty transformer on a halogen light. I had the transformer replaced and my readings came back to normal.
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I dragged my feet on this purchase for a long time because to outfit a home with the average 20 GS filters would seam cost prohibitive at a glance. And I was still stretching even my limits of belief. But since my past Environmental Medicine Doctor suggested this system last year to help with some of my chronic health issues, I finally got around to at least buy the meter to give it a chance. I watched the youtube video from Stetzer and felt the case was solid enough to at least do the measurements - not necessarily buy the filters themselves yet.

What I found was amazing. And I was able to make some decisions that didn't involve actual filters in my first "phase" of remediation.

A few things I did already was replace all the spiral compact fluorescent light bulbs with LED. So that the ballast wouldn't be a factor. I also had replaced all dimmer switches with straight flip-switches. If you hold your head next to a dimmer, you will hear it humming.

What the meter showed me was that every computer in my house was producing at LEAST 400 GS units (9600 volts per second). One computer I own, an HP Compaq slim form-factor produces 1800 GS units (43,200 volts per second). This one computer, when on, was ALSO causing 1800 GS units to show up in the master bedroom. I was confused at first because they are on separate circuits. Some investigation revealed that the two circuits had romex that was stapled in parallel under the first floor joists.

It was at this moment that I started shutting computers off more often and especially at night. I started sleeping better right away. I don't usually remember my dreams and I was diagnosed with central sleep apnea (a neurological cause for breathing to stop in the middle of the night).
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I purchased this meter after reading about the potential health effects of dirty electricity. I felt compelled to measure my living environment but never expected what I found. I have a big problem!

Finding a problem and knowing what to do about it, however, are entirely different things. For example, sprinkling dirty electricity filters throughout my home does not appeal to me. It is an expensive and potentially unhealthy solution, too.

Dirty electricity is a controversial topic no doubt, with a healthy dose (no pun intended) of confusion thrown in. It has sent me on a course of study that is still under-way.

The reason for 4 rather than 5 stars? It's a solid meter and could prove to be one of the best purchases I ever made, however, it lacks anything more than basic information on its use.
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Good product; it is everything that it is supposed to be for testing for dirty electricity. I used it and it measured my circuits and I was able to fix problems with filters from the same company. I will be purchasing more filters. Friends are using it right now and finding that they are living in huge fields of dirty electricity generated from the neighbors solar system inverters. Then they went to the fathers house and the solar inverter fields were so bad that they maxed out the meter display. Yet, at my house with no solar systems nearby, the dirty electricity readings are relatively low.
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Works very well. I bought several filters as a result of the readings this meter gave me. Apartment kitchen outlets were at/near an outrageous 1500 gauss. The meter does exactly what it's supposed to.
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This shows the level of transients on the wiring in the house at any given time. Often the electricity as it comes into the house, is already "dirty" and this shows how much as well as how much each appliance increases the level of transients while in operation.
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I a not sure what it is measuring. but it measures it quickly & updates rapidly.
When I began installing filters it positively showed the reduction in dirty house current.
I am feeling better & sleeping better, I am planning to add more filters to try to get all rooms of the house below a reading of "50".
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