You can enable Google Assistant to control your C by GE devices.
Note: You must own either a C-Reach or C-Start Switch to enable Google Assistant.
Just follow the steps below.
Go to the Play Store and download the Google Home App.
In Google Home app, go to the Home Control section and press the "+" button.
Scroll down and select C by GE.
Enter your C by GE credentials.
Subscribe for all C by GE communications
Don't forget to check your email to complete your subscription.