I know for a fact that they've built some utter shite IoT hardware as well. Can't give details, but it's a sensor that gives data which can be used to detect early on the failure of a GE $very_expensive_machine. One of our clients bought hundreds of sensors, and after two years only ~30% of the sensors are providing sensible data. The rest are suffering from constant power failures, or just showing constant data, or even measurements decreasing with time (which is not physically possible).