Nest Detect is an advanced sensor that can detect motion and when windows and doors open or close. It can even tell when it’s being tampered with. Detect requires Nest Guard to sound the alarm and work with the Nest app.
Detects Motion: In a room or a hallway
Detects Open/Close: On doors or windows
Nest Secure has three different security levels that you can use when you’re home or away. Your Detects will look for different activities depending on what level is currently set. For complete details, see the following article.