Google Nest Detect Sensor Only $39 Shipped (Regularly $49)

If you scored a Google Nest Alarm on Black Friday, or just need more sensors, head over to the Google store where you can score the Google Nest Detect for just $39 shipped (regularly $49).

As an alternative, Best Buy also has the Nest Detect sensors for just $39.99 shipped.

This Nest Detect sensor pairs with your Google Nest Alarm to monitor doors and windows. Stick Nest Detect on a door, wall or window to detect motion and movement. And with Quiet Open, you can press the button on the Nest Detect and open a door while the house is armed without setting off the alarm.