Now that Nest has resumed selling the Protect smoke detector following a recall, it's back to business as usual: The company needs to make sure this isn't just a safer product, but a better one. The Google-owned firm just released a fairly meaty software update, with features that run the gamut from finer user controls to improved accuracy. Most importantly, perhaps, the Protect now claims to do a better job telling the difference between steam and smoke, with the so-called Steam Check feature reducing those kinds of false alarms by 50 percent. Meanwhile, a new "Safety History" shows you a 10-day log of what caused your alarm to go off. Included in that record are carbon monoxide levels, including how long they were in dangerously high territory.
Nest Protect now does a better job of telling steam from smoke

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