Go with a vendor that's serious about comprehensive security.[1][2] Google/Nest just imports the hardware from China anyway. Cut out the middleman and buy direct.
[1] https://www.facebook.com/PhilteqHikvision/videos/35218484261...
[1] https://www.facebook.com/PhilteqHikvision/videos/35218484261...
I'm not seeing anything beyond cameras and a doorbell. No panel, door sensors, window sensors, motion detectors, etc.
[edit] Only available through a reseller [1]