
Nest Protect Set of 3

Nest Protect Set of 3
Hi - How old are the units that are supplied, based on a total of 10 years of service life, still so relevant? - how long is the operating time of the batteries on average? - From my point of view, we are talking about so-called IOT devices that I actually want to operate in the guest WiFi and not in my private network. Do I have to be on the same WiFi for a) configuration, b) control with the smartphone/tablet or does the control work via the Nest account via internet? - If I operate the Protect in the guest Wifi (or in future probably "IOT network" i.e. sep. SSID), how does it behave with the alarm messages? Will I receive them on the mobile devices? This is also the case when I am on the road, for example? - Does anyone know whether a new generation is to be expected in the near future and whether Google Home will be integrated? Thank you for any relevant information