Nest Protect 2nd Generation Battery Smoke Carbon Monoxide Detector Alarm 3-Pack - White

Just received the Nest Protects in January 2022, and after unpacking, discovered that they were produced in 2017, and have an expiry date of February 2027. This means that I paid full price for an item that is halfway its useable lifetime. After the expiry date, the Nest Protect is not usable anymore.Customers should be made clear of this BEFORE they buy. I purchased Nest Protects before, and they were all produced within a couple of months before they were received, so allowing me to have the full life of them.I returned the items as I am not prepared to pay a full price for half the product lifetime.

worth the Money, and all voiced Emergency all and named location ie livngroom or bedroom or kitchen so say there smoke in the Kitchen here what it say ( please beawere there smoke in the Kitchen the alarm will sound it going to be loud )then 2 sec later all the others talke to eachother ie it will say to you as above and tell you were you have a choice press the smoke Alarm to Silence or leave if the somke gets worse you will will know all over the House if you say open you windows say then the smokes goes away it will tell you and all the other will auto let you know that ( the Alarm is over in the Kitchen ) and all auto reset same goes for Carbon moxide as these are for both they hold 6 batt each recharge and they come with the senses i got mine about 4 to 6 month ago there still working no rechrge yet and when I cook well lets say my food smokes a bit so they do go off but i just push the middle button and it Silence it till the smoke goes you not have to reset as it Auto if the smoke does not go or gets worse it will trigger A full Alarm, and there more features to it ie: it will Allert your mobile, in the darkif you get up and the light will show you the way There AMAZING worth every penny

Six batteries in each i do hope they last !!!

Great product and easy to setup.

Very easy to set up and verbal warnings

READ the 1-Star reviews --- these are more reliable than the 4 or 5 Star reviews.Purchased the 3 pack of 2nd Gen NEST Protect units in June 2017. Using NEST's instructions, all units setup flawlessly -- attached to my 2.4Ghz Wi-Fi and connected to the internet. Using iPhone app, was able to see my NEST Thermostat and 3 NEST Protects.Units worked fine until early-2019 -- when all Protect units (plus my NEST Thermostat!) continually disconnected from 2.4Ghz WiFi and did not reconnect. Protect units refused to reconnect to Wi-Fi -- and I had to Factory Reset 10x times... to finally get a re-connection. But, units then disconnected after less than 24 hours. Followed all NEST instructions on web site --- but units continued to fail.After 15+ hours of troubleshooting and tech support -- I finally gave up on the Protect units.Protect units that depend on firmware and software updates... creates too many issues and risks ... for fire/smoke/carbon monoxide detection. I am not putting my family at risk with questionable technology.Bottom Line - I do not trust that the Protect units are staying connected to the WiFi or the internet -- not to mention each other (w/o WiFi mesh). And, based on other Amazon reviews (read 1-star reviews), I believe that NEST Protect (2nd Gen) units are based on a flawed design and the units are not ready for serious production use in a life or death environment.