My Take: April 2024 Nest Secure application and device stop working if
the service is not migrated to ADT.How to determine what remains
connected etc? Remove power from Nest Secure, Battery is discharged. The
results should be obvious.
I have the same question.I did notice from the Google Home App, Camera,
Yale Lock, Thermostats, and other Google devices are shown. No Video
history or event notification is available. The notification message was
sales for ADT service not much else!