Cummins residential units connect to the internet for remote monitoring and control and will send email on faults or other events. Of course that requires the internet functional.
There is also a system that use cellular connection for sites without internet and for increased security but they aren稚 cheap when compared to a resident unit worth a couple grand. Ironically, $1200 for a remote monitoring system is a hard sell even on a half million dollar generator.
PowerCommand Cloud - Portal
Any unit considered life safety is supposed to be monitored 24/7 on site or offsite and low coolant temperature has been included in the 田ommon alarm list for at least 20 years.
Bean counters rule....... must be something to do with Capital Equipment Depreciation being so attractive..... making a one-time huge purchase = Good, perpetual minor recurring cost = Bad !
Then again.... many people prefer to put complex technology in place, then just ignore it.... Gotta Have Faith !
What you describe CM is pretty much the minimum I would expect today..... after all, the internet should be useful for something other than having Kim K's back-end take over the universe......
Rgds, D.