The ZONESCAN 820 is easily the most advanced, robust and best performing logger on the market. It is the only radio logger worldwide that is capable not only of logging noise levels, but also record the sound frequency spectrum, and to provide enough sound detail to correlate. It is therefore the only radio logger that will allow you to avoid false positives by filtering out non-leak noise sources, and pinpoint the exact location of leaks using correlation and cross-correlation techniques between loggers.
The datasheet of the ZONESCAN 820 can be found by pressing the DOCUMENTS button.
Additional information about Gutermann AG's other logger products can be found in the address www.gutermann-water.com.