“Does this device have an expiration date. I had an issue with the ones that my alarm company installed. They expired after 4 years. Although they operate with same lithium battery as your device.”
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Carbon Monoxide Detectors work by chemical reaction, which is why they have a more limited life. Our 2-in-1 Smoke & CO Detectors should be replaced within 5 years of the manufacture date (as printed on the back of the device).
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