First Alert SA9120BCN Smoke Alarm Hardwire with Battery Backup
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Product Details
Manufacturer: First AlertModel: SA9120BCN
Color: white
Product features:
- 120-volt hardwire ionization smoke alarm with battery back-up
- Uses Smart Technology to reduce nuisance alarms
- Features convenient silence/test button, power indicator, 85-decibel alarm
- Latching alarm indicator identifies which unit triggered alarm
- 9-volt battery included; 10-year limited warranty
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Tools and Hardware Reviews of First Alert SA9120BCN Smoke Alarm Hardwire with Battery Backup
Customer Review: Best Replacement Units
Summary: 4 Stars
When the hard wired ionization alarms in my house started to fail (with constant false alarms) I could not find direct replacement units because the original ones were no longer produced.
The primary reason for choosing First Alert units was price, brand name recognition (I heat with coal and have a very precise CO detector made by them) and it provided both the hard wired capability with additional battery backup, not found in the 20 year old units originally installed in my house.
Installation was easy because these units were being installed in the existing electrical boxes. Turn off power, remove old units, install new bases, plug in wires, twist 1/4 turn right to lock in place and turn on power.
After testing under smoky and invisible ion conditions with my wife's cigarettes, I was satisfied they were working properly.
The only downside I can see is that these units SEEM much quieter than the units formerly installed in the house by 5 to 10 decibels. This is not good if you consider that these are installed in the hallway OUTSIDE the bedroom doors and I have 93 Db hearing loss!
Description of First Alert SA9120BCN Smoke Alarm Hardwire with Battery Backup
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. First Alert's SA9120BCN alarm with battery back-up uses ionization smoke sensing technology and sounds an 85-decibel alarm. A power indicator on the unit confirms that it is receiving power and a silence/test button checks all alarm functions and silences a non-threatening alarm. If the wired-in power is malfunctioning, the 9-volt back-up battery powers the unit. The battery is easily installed in a pivoting side load battery compartment. The universal mounting brackets are designed for easily installation and help to hide drywall cutouts. The mounting system includes a gasketless base and mounting jacket. The alarm contains an optional pin to lock the battery and unit in place for tamper resistance. When the alarms sound, the latching alarm indicator identifies which unit initiated the alarm, alerting you to the area of danger. The alarm includes quick plug-in connectors for easy installation and can be interconnected with up to 12 compatible smoke alarms and 6 additional units. If one smoke alarm in the series triggers an alarm, they will all sound. AC-powered smoke alarms must be installed in accordance with all local electrical codes, and should only be installed by a qualified electrician. This alarm includes one 9-volt battery and comes with a 10-year limited warranty. Approved for sale in Oregon after revisions to Governor's law. Replaces old #SA4121CN.--Bree NorlanderWhat's in the Box
One smoke alarm, user's manual, and one 9-volt battery
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