This was expected after drone privacy debates has become mainstream. And I expect there will be more and more such kind of devices in near future.
I think this is not yet fully developed to be commercialized from technical characteristics point of view.
The Primary Command and Control Module can typically communicate with nodes up to 200 feet away.
Each Detection Sensor Node can typically detect drones within 50 feet in all directions. Frequency detection range is 1MHz - 6.8GHz."
From 50 feet away you can hear it :). ... for triangulation, I think 50 feet is too short.
Maybe now, small radar kits such as MIT Coffee Can Radar (I mean modified smaller version), Radarduino for private use will be more popular (because of their 1km detection range??).
What do you think guys?