Editorial Product Review:Amazon.com Item Description:Working smoke alarms cut the risk of dying in a home fire by 50%, and that's important because a home fire starts every 83 seconds! The faster you know about a fire, the faster you can start moving your family outside. The First Alert smoke alarm with lithium battery gives you the peace of mind of a 10-year battery life warranty. It uses ionization smoke sensing technology with a new contemporary enhanced smoke gathering design. It features a low battery alert to remind you when to change the battery and has a missing battery guard to ensure that a battery is placed inside the alarm. The side battery drawer slides open for easy battery replacement. A blinking power indicator on the unit confirms that it is receiving power. The silence/test button allows you to both silence a non-threatening alarm and to test the unit's functionality. The alarm contains an optional pin to lock the battery and unit in place for tamper resistance. It can be mounted on either the ceiling or the wall and can be used in mobile homes and RVs. It includes one 9-volt lithium power cell with 10-year battery life warranty. 10-year limited warranty on alarm unit. UL listed for safety. Approved for sale in Oregon.
--Bree NorlanderWhat's in the Box One smoke alarm, user's manual, and one 9-volt lithium power cell
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Buyer Reviews
Average Buyer Rating:
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10 Year Battery
Connect the battery, attach to ceiling, and sleep soundly. What could be simpler?
The California building code requires smoke detectors as follows:
1. On the ceiling or wall outside of each separate sleeping area in the immediate vicinity of bedrooms.
2. In each room used for sleeping purposes.
3. In each story within a dwelling unit, including basements but not including crawl spaces and uninhabitable attics.
Customer Rating: 
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Sensitivity Level of These Detectors.
I bought 2 of these alarms to replace a couple other alarms in my home as they were about 15 yrs. old & thought it might be wise to "update". The long-life lithium batteries was a real selling pont to me. The one thing that concerns me about these new detectors is that aren't nearly as sensitive as my old detectors were. My wife ocassionally burns things while cooking, or gets the oven too hot. My old detectors would "go off" when this happened. These new ones have not signalled when this happens but the old ones still do. I tested the new ones by heating an iron skillet on the stove with a bit of grease in it. LOTS of smoke bellowed out, the old detectors sounded immediately but it took a couple minutes longer and a lot more smoke for the new ones to finally signal. Hope this isn't over-reaction on my behalf but I sort of like the sensitivity level of the older detectors compared to the new ones.
Customer Rating: -
FIRST ALERT
I ORDERED 2 FIRST ALERT SMOKE ALARMS TO REPLACE TWO VERY OLD ONES. THE LONG TERM LITHIUM BATTERIES WERE APPEALING SINCE I WOULD NOT HAVE TO REPLACE THEM EACH YEAR. IT TOOK ME A WHILE TO FIGURE OUT HOW TO GET THE BATTERY INTO WHAT SEEMED LIKE A TOO SMALL SLOT, BUT IT WORKED OUT FINE.