50/60 Hz electric and magnetic fields are not the only pollution emitted from wiring in buildings. 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!
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"