Meet the Nest Secure Alarm System. Unlike most security systems, Nest Secure is easy to live with every day. Arm and disarm your alarm however you like. If you forget to arm, you can get a Remind Me alert. Nest Detect sensors look out for doors, rooms and windows. The built-in Google Assistant can help you manage tasks, get answers and control your home. With the free Nest app, you can check in anytime. And you’ll always know when something happens at home.