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Not immediately, the way the integrated NEST smoke and CO detectors work is that the detector for which identified the alarm condition first sounds giving you the opportunity to squelch the alarm if it might be a false alarm by pushing in the button to cancel it. After a minute (plus or minus - not sure of the delta T here) and if the condition persists then all of the rest of the alarms that are networked together will sound. The thing I really like about the NEST alerts is that they tell you which NEST(S) is(are) alerting so that you have an exact idea of where the problem is occurring, if it is spreading, and when looking afterwards where the first detection point occurred. The way we have our alarms setup it precisely identifies verbally the "Smoke detected in the upstairs Kids room" or "Smoke detected in the Master Bedroom". The vocalization part could use some work by the NEST company as it doesn't allow you to vocalize the name of the room such as "Tom's bedroom" but when you get the alerts also occurring on your mobile device then it identifies the exact location such as "Tom's room" instead of just saying "Upstairs kids room". We have had many false alarms with the system but almost all of them have been due to human error, such as our middle daughter burning candles in her room. We have had a couple events where dust or some such gets into the device and it is clearly not a smoky condition but is alarming anyway and then you can use a can of compressed air and just blow out the air vents in the device and the alarm goes away. I learned that by having the fire department come the first time, since then I do it myself! Hope this answers your question
Sorry, there was a problem. Please try again later.According to the installation directions the answer is yes. Once one alarm sounds they all sound
Sorry, there was a problem. Please try again later.Yes. If all your Nest Protects are connected to your Wi-Fi network, they will all be triggered and sound the alarm.
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