The Line EMI Meter will allow you to measure electromagnetic interference on your electrical network. To do this, simply plug the unit into a wall outlet. This will immediately display the total line noise in millivolts in the frequency range 10kHz to 10mHz. 

The box also incorporates a small loudspeaker in order to reproduce the EMI demodulated in amplitude and to make it possible to identify the source of these interferences.

Due to its very wide measuring range, the displayed value can remain high despite the use of a mains filter, as these usually filter a specific frequency range. This product is rather recommended for measuring a general noise value on the installation at a given time.