Seems pretty cool. You need a vacuum that can be left on and stop/started at the mains by the Bluetooth plug adapter. I guess the dongle attached to the tool/hose reacts to vibrations?
If that’s the case, no reason it couldn’t be attached to a mains tool also for auto extraction with a ‘regular’ vac.
With a couple of festool vacs I’m not about to jump on it. But I like the product and hope it sticks around, as I can see it could be handy.