All of these goods communicate with one another through a centralised hub that has a built-in keyboard, a siren, and a complete battery backup in the event of a power loss. Each of the aforementioned components is fully compatible with practically every Google Nest gadget, including the battery-powered Nest Doorbell, Nest Learning Thermostat, Nest WiFi Router, and several interior and outdoor cameras. Nest Hub Max smart screens are also supported.