The support page for the Nest Wave feature is interesting http://support.nest.com/article/What-is-Nest-Wave-and-how-does-it-work http://support.nest.com/articl

The support page for the Nest Wave feature is interesting http://support.nest.com/article/What-is-Nest-Wave-and-how-does-it-work http://support.nest.com/article/What-is-Nest-Wave-and-how-do... >One of the most common things you see when a smoke alarm goes off is people waving their hands, towels or magazines to air out the room. With Nest Wave, that instinctive motion will actually silence the alarm. A person's natural response to the first sign of danger might silence the alarm, inadvertently, and lead them to believe that they are safe. That is troubling. However, they have thought about this problem: >Depending on the situation, you may need to wave more at Nest Protect in order to silence it: Non-emergency situations require less waving, such as cancelling a manual test or listening to a Nightly Promise message. For your safety, you’ll have to wave more at Nest Protect during a Heads-Up or an Emergency Alarm. This helps ensure that you are deliberately trying to silence an alert. Obviously, the liability load on this product is far more than most other gadgets. I guess that even though they anticipated this sort of issue, a paranoid level of caution is required from Nest (Makes me think of the attention that Tesla received over one or two battery fires, or that bitcoin receives over company failures. New products are held to much higher standards than 'traditional' products)