Yes, the KP125 are to pair with Amazon Alexa’s cloud, Apple Home Kit’s cloud or Google assistant’s cloud. Once connected to their cloud and you already have you google/apple/ Alexa account in home assistant (hubitat)… it pulls the credentials from your google assistant’s cloud.
So after a week of normal use, I was able to see that Sense was “missing” about 3% of my furnace/hvac power usage. A few days were within 0.5% and others were of by as much as 6-7%. The days with high error could be traced to one of two reasons. First, if Sense missed a start/on event, it missed all of the usage for that cycle. Second, Sense has only detected the actual heating cycles (~2 minute sequence of draft fan, ignitor, and main blower). Fan-only operations are not detected. So, I expect my summertime errors would’ve been much higher.
On the power usage side, this application seems to be a pretty good fit for the the HS110. Running watts are between 800 and 1000, with a peak of about 1600 when the main blower starts. With the relay contacts bypassed, I don’t anticipate any issues.