http://www.techradar.com/news/nests-new-home-security-system-aims-to-combine-power-with-ease-of-use

Nest is taking home security to the next level with Nest Secure, a new alarm system that protects your abode with a hands-off approach that's just as effective at protecting against intruders. 

There are multiple components to the system - making it modular, if you will - which Nest unveiled at an event in San Francisco, starting with Nest Guard.