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Your detector emits three repetitive beeps every 45 seconds or so?
Can I replace the battery in my smoke detector?
How to desactivate your smoke detector ?
How do I replace my smoke detector ?
What to do with my used smoke detector?
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Why measure CO2 ?
Why use an NDIR CO2 sensor ?
How to calibrate the CO2 sensor?
Can the battery be changed after 10 years of use ?