Name of Product: KN-COSM-IB Hardwired Combination Smoke/Carbon Monoxide Alarm
Concern: When the alarm reaches the end of its useful life, it issues an end of life chirp every thirty seconds. If the battery is replaced when the unit is at its end of life, and the test button is pressed within 10 seconds thereafter, the unit will no longer issue an end of life chirp and will no longer detect smoke or carbon monoxide.
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