EMI (Dirty Electricity) Meter

(1 customer review)


This basic, easy-to-use meter measures the amount of dirty electricity (a.k.a. electrical noise, line noise, EMI) present on the wiring in buildings. Find out how much of this electrical pollution is on your wiring at home, work etc. See the difference Greenwave filters make in reducing it.

Compatible with 50/60-Hz electrical circuits with voltage anywhere between 100V and 240V. Will come with a plug suitable for the electrical outlets in your environment.

We strongly recommend this meter for guiding the installation of dirty electricity filters. It can help you determine the best number of filters to install in each room and where to place the filters for optimal results. It can also help with troubleshooting problems that occasionally arise during installation, such as resonance.

$15 meter discount with the purchase of 8 or more Greenwave dirty electricity filters. Use coupon code meter15 at checkout.)

SKU: M-GW-EMI(B) Category:


The Greenwave Broadband EMI Meter is a revolutionary tool for accurately measuring the amount of dirty electricity (a.k.a., electrical noise, line noise, EMI) present on the wiring in buildings and for guiding the installation of dirty electricity filters.

Key Features

  • Measures a broad range of dirty electricity (EMI) frequencies
    The meter measures dirty electricity (EMI) frequencies from around 3 Kilohertz up to 10,000 Kilohertz (i.e., 10 Megahertz), a range that extends approximately 5 times lower and 20 times higher than the range covered by other plug-in dirty electricity meters.
  • Easy to use!
    Simply plug the meter into electrical outlets to find out how much dirty electricity is on nearby wiring. The electronic display shows readings in millivolts (mV), an internationally accepted standard electrical unit of measure.
  • Makes “BEFORE filter” and “AFTER filter” comparisons easy
    The meter can show “BEFORE filter” and “AFTER filter” dirty electricity readings on the same screen simultaneously. The “AFTER filter” display screen also shows the % reduction in total EMI between approximately 3 Kilohertz and 10,000 Kilohertz (i.e., 10 Megahertz).
  • Let’s you listen to dirty electricity – Hear the difference filters make!
    The meter converts dirty electricity frequencies into representative sound so you can listen to the electrical noise on your wiring when the meter is plugged in. Hear the noise decrease as dirty electricity filters are installed.
  • Compatible with 50/60-Hz, 100-240V electrical circuits.
    The meter can be used in most countries around the world and will come with a plug suitable for the electrical outlets in your environment.


Evaluate Your Environment – Do You Have Too Much Dirty Electricity?

With Greenwave’s Broadband EMI Meter, it is easy to find out whether dirty electricity levels in your environment are higher than desirable. The meter presents dirty electricity readings in millivolts (mV). Ideally levels should be below 25 mV in all rooms within your environment. Levels above 50 mV are undesirable and should be reduced.


See the Difference Greenwave Filters Make!

With Greenwave’s Broadband EMI Meter you can see the difference Greenwave filters make in cleaning up the dirty electricity on your wiring.

The process is simple. First, plug the meter into the top socket of an electrical outlet to measure the dirty electricity (i.e., EMI noise) present on nearby wiring (“BEFORE filter” reading).

Next, insert a Greenwave filter into the bottom socket of the same outlet. The “AFTER filter” display screen will show both the initial dirty electricity level at the outlet and the new level in millivolts (mV). It will also show the % reduction in “noise” density.

The meter is also an excellent tool for guiding the installation of Greenwave filters. It can help you identify significant sources of dirty electricity in your environment and determine the best number of filters to install in each room for optimal results.



Click the following link to view instructions for Greenwave’s Broadband EMI Meter:

Additional information

Weight .8 lbs
Dimensions 10 × 7 × 5 in

1 review for EMI (Dirty Electricity) Meter

  1. Eric

    Buying this Greenwave EMI a few years ago has already paid for itself, When I did a random test on my home electronics found one appliance gave a lot higher Dirty Electricity (DE) than the others. When I looked into the appliance found the electrolytics had such high ESR (Equivalent Series Resistance) that if I had not found it so fast, the electrolytics would of destroyed the Switch Mode Power Supply (SMPS) destroying other components like the switching transistor and the emitter resistor, making the SMPS board uneconomic to repair.

    Any electronics service person who see the value of a ESR meter to speed up the time to detect failing electrolytics should also have a EMI meter.

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