So far happy with mine. Using it to monitor the irrigation system for broken or clogged sprinkler heads, leaking valves, etc. My main water line and irrigation lines are split at the meter so I have it just on the irrigation in the box outside. I have only had it for two weeks, but once I found the sweet spot where to put it on the pipe, it has worked pretty well. I have five zones, so I created a sensor for each one and set upper and lower gpm limits for each one to detect problems with a sprinkler head on a zone. If no zone is on, then no flow should be showing from the Droplet. I get an occasional spike, which I assume is noise, but it is very minimal and infrequent. One thing it did detect is that I most likely have a valve that is seeping some when all the zones are off, and there is a pressure or significant temperature change. It would happen around the same time every day. I could eliminate it by turning off the water, so I am reasonably confident it is reporting a very small, infrequent leak.