We ran the Google Nest Protect through CR’s lab tests, and used it in real-world situations at home. Here’s what we found: According to our lab tests, the Nest Protect does a superb job at detecting smoky, smoldering fires and low levels of carbon monoxide (100 parts per million). Its performance at detecting high levels of CO (400 parts per million) falls in the middle of the pack. But it does a poor job of detecting fast, flaming fires with minimal smoke, typical among… Source link
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