@Coriolis what a treat! Thanks for the check in. We most definitely are still pursuing this idea. We've had to "pivot" the technology towards something easier to use and cheaper to make...we just couldn't make the wirelessly powered device cheap enough to scale it. I've got a few still, and they're actually pretty awesome in my carboys, but that's where they do their work nowadays. It's also the reason we have been quiet...we tried rolling out that last version a little over a year ago, ran into numerous problems, and couldn't deliver. It was a humbling experience, to say the very least.
That being said, we never stopped (can't stop) and have continued developing and testing a hard-wired device in San Diego that is much more effective (so we're told), is a fraction of the cost, and is made of stainless steel (we heard y'all). It's a bung replacement, fits right into the bung hole. We've got a few in the field already, I'll see if I can get a pic or two. More coming, for sure.
Give us a shout if you're interested, we'd love to hear from everyone. Cheers.
matt@hertzbier.com