Hacking the Pentair Jung Pumpen AGR device My house came with a strange little device called a Pentair Jung Pumpen AGR. Honestly, it might be the most overpriced gadget I’ve ever seen — essentially a passthrough plug with a small leak sensor that triggers a loud alarm. There’s no configuration, no smart features, and it’s only IP20 rated. Yet somehow, this thing sells for over €300(!). I’d never paid much attention to it — until recently, when a small leak (thankfully no real damage) set it off.