This is an active not a passive product. As can be seen from the graph, it cancels far more noise across the frequency range than a passive product.
Active filtration is MUCH better in the lower frequencies, at -40dB. Passive filtration is only truly effective in the very top-end of the frequency range.
Discover more about passive v active filtration and noise contamination here.
Based on military technology originally used in aircraft, our Active Noise Cancellation® (ANC) generates a signal identical to the noise signal but in the exact opposite phase to actively cancel all incoming noise.
Read more here.
The LED indicators show Polarity and Earth detection. As usual, green is good, red signifies an issue.
There are four possible combinations and these can be found in a brief table in the User Manual. This tells you what the issue is and suggests how to remedy it.
You can use multiple AC iPurifiers simultaneously in your system.
The more AC iPurifiers you use, the cleaner the overall power. If the AC iPurifier is placed in the middle of a power strip, it will also act as a noise shield. Noise is reduced, isolated and confined to the respective left/right sections of the AC iPurifier.
Try in different locations to discover which has offers the most improved sonics.
The Over-voltage Surge Protection (OSP) is an auto detection and cut-off circuit.
Should it detect an excessive power surge or short in the mains electricity it will automatically cut off. If this issue persists, it will not reboot and will protect your equipment from harm.
It is effective to max. 30,000A @ 1,000V/10uS.