Shannon from https://www.house-improvements.com explains that these alarms do have expiry dates.
Amazon affiliate links for Smoke and carbon monoxide alarms:
USA: https://amzn.to/3mmKxdM
Canada: https://amzn.to/2YbVNl8
If you have questions about your home improvement projects, stop by the forum on our website, where Shannon will answer your questions in detail for free.
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