“If these last for 10 years, is that from the moment you buy/install them or the moment they are manufactured? If the unit is sitting on store shelf for 2 years, would that mean it will only last 8 years for me?”
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As with all smoke and carbon monoxide alarms, the life expectancy of Nest Protect begins from the date of manufacture. The "expected lifespan" of the sensor can diminish depending on environmental factors or excessive usage. However, time spent sealed in a box on a shelf should not impact the performance of the product beyond the expected life span of the sensor.
Sorry, there was a problem. Please try again later.10 years from date of manufacture (printed inside the box) I recent purchased 8 of these — 7 were made within 2 months of purchase and the last one was 3 months old. All we’re purchased online.
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