Posted by Merializer on
URL: https://www.es-forum.com/Gaps-in-Meters-Detectable-Frequencies-tp4033417p4033498.html

Mine has those 3 modes yes. It measures low frequencies electric (but not magnetic).

What the Esmog Spion measures cannot be used to compare to Building Biology Guidelines. It indicates high-mid-low levels. What it measures is kinda open to interpret, but if the orange LED's start to glow it is already pretty bad. But even when no LED's glow it could already be bad for a sensitive person, if the sound function makes a lot of noise.

The manual says:
Display in power density (RF): 10 - 1000 microwatt/m²

it's not clear to me how low the meter goes. But the sound function likely picks things up at very low levels.