Stetzeriser Microsurge Meter - $130 (South El Monte)

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From the website: The STETZERiZER® Microsurge Meter is easy to use — just plug the meter into any standard electrical outlet and look at the reading on the screen.
Readings are displayed in GS (Graham-Stetzer) Units — a simple numerical value assigned to a complex calculation of the instantaneous amount of high-frequency energy (dirty electricity) present at an electrical outlet.
The STETZERiZER® Microsurge Meter works on 120 Volt or 240 Volt electrical systems operating at 50 or 60 Hz.
An appropriate plug adapter is required where Type A/B (NEMA 1-15/NEMA 5-15) plugs are not available.
The LCD display reads in GS (Graham-Stetzer) Units – more precisely, dV/dt – which is an approximation for the high-frequency energy.
High frequencies are the frequencies that are most harmful to equipment, animals, and humans.
The STETZERiZER® Microsurge Meter is certified by the Government of Kazakhstan as the official means of measuring RF Energy on building wires.
Good, marginal, and undesirable range of meter readings are conveniently listed on the back of the Microsurge Meter.
Electrosensitive people have reported sensitivities with readings as low as 27 on the Microsurge meter.
However, medium or even low Microsurge Meter readings should not be interpreted as a guarantee that there is no harmful health impact; only a medical expert can determine that.
Caution is required.
Some harmful health effects of high-frequency energy on humans appear to be cumulative, and possibly non-reversible.
Science is inconclusive in this area, although the body of empirical evidence available for guidance continues to expand and stabilize.