Just be careful about two things about the Nest protect, which are not obvious when you first purchase it.
1. If your house has the 3rd wire running between all the smoke alarms, so if one detects smoke, they all ring, Protect will not work with that system. It doesn't have the hook up for the 3rd wire. Nest will tell you to replace all the smoke detectors with the protect if you want the alarm to go off in the entire house.
2. If the Nest does detect smoke, it goes off and there is no way to turn it off until it thinks the smoke has cleared. Short of climbing up to the ceiling and ripping it off the power supply it will not turn off. You can't turn off the alarm via the app or by physically pressing the button.
I was originally very excited by the nest protect, but now not so much.
1. If your house has the 3rd wire running between all the smoke alarms, so if one detects smoke, they all ring, Protect will not work with that system. It doesn't have the hook up for the 3rd wire. Nest will tell you to replace all the smoke detectors with the protect if you want the alarm to go off in the entire house.
2. If the Nest does detect smoke, it goes off and there is no way to turn it off until it thinks the smoke has cleared. Short of climbing up to the ceiling and ripping it off the power supply it will not turn off. You can't turn off the alarm via the app or by physically pressing the button.
I was originally very excited by the nest protect, but now not so much.