However, in the case of the models that actually supported PD, QC, or IQ charging technologies, we asserted that these models had more intelligent protection for their integrated circuitry
And because these are critical safety devices, we picked only the smoke detectors that have what we consider to be the most important smart features: NRTL tested to meet the latest standards (UL 217 Edition 9) smartphone alerts sent when triggered interconnection with other smoke alarms carbon monoxide (CO) detection integration with smart-home systems We also looked for models with additional capabilities, such as: silencing through an app easy installation voice alerts, as well as an alarm location announcement during alarms low-battery, malfunction, and end-of-life alerts Most new alarms use a single kind of sensor (two kinds used to be considered best practice), and due to new national standards they are now calibrated differently
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Surgeon General of the United States
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