Sealed-in 10-year lithium battery
Automatically activates when attached to bracket
End of life warning
21010161 Features: -Includes end of life warning and end of life hush feature. -10 Years of battery life. -Sealed-in lithium power supply. -Advanced photoelectric sensor detects particles associated with slow smoldering fires. -Alarm automatically activates when attached to mounting bracket. -Voice alarm announces fire. Product Type: -Smoke Detector. Orientation: -Wall/Ceiling Mounted. Power Source(s): -Lithium-Ion Battery. Mounting: -Universal Mounting Bracket. Compliance, Standards: -UL Listed. Dimensions: Overall Height - Top to Bottom: -1.4. Overall Width - Side to Side: -5.22. Overall Depth - Front to Back: -5.22. Overall Product Weight: -1 lbs.
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