First Alert SA9120BCN Smoke Alarm Hardwire with Battery Backup

Other products by First Alert

Product Description

Amazon.com Product 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. 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 Norlander

What's in the Box
One smoke alarm, user's manual, and one 9-volt battery

From the Manufacturer
First Alert battery-powered smoke alarms are easy to install and have many unique features designed for different areas of your home. All feature low battery alert "chirps" to remind you when to change the battery.

Product Details

Fire Detection and Protection Fact Sheet [27kb PDF]

• Product Dimensions: 8 x 2 x 8 inches ; 12.8 ounces
• Shipping Weight: 10.4 ounces (View shipping rates and policies)
• Shipping: Currently, item can be shipped only within the U.S.
• ASIN: B000BQMLPK
• Item model number: SA9120BCN
• Average Customer Review: 3.1 out of 5 stars See all reviews (12 customer reviews)
• Amazon.com Sales Rank: #12,034 in Home Improvement (See Bestsellers in Home Improvement)

  Popular in these categories: (What's this?)

  #32 in	Home Improvement > Fire Safety & Home Security > Fire Safety > Smoke Alarms
  #85 in	Home Improvement > Fire Safety & Home Security > Household Sensors & Alarms

Customer Reviews

Most Helpful Customer Reviews

6 of 6 people found the following review helpful:

1.0 out of 5 stars Perfect if you like to be awakened at random times during the night, November 27, 2007

By	Adam (GA, USA) - See all my reviews

This product has a tendency to emit loud chirps at random times (typically at night) and frighten our young children. I have several installed in my home and all of them have the same problem. I have read this is somehow related to fluctuations in electrical current - however our house is new and the wiring is new. This is such a nuisance I would not recommend installing it in your house.

8 of 9 people found the following review helpful:

5.0 out of 5 stars Ten Minute Installation, June 16, 2007

By	Tool Time (Cantonment, Florida United States) - See all my reviews

This smoke alarm uses ionization sensors and appears to be well made. It is easy to install with a screwdriver (and needle nose pliers if you use the optional locking features). Turn off the power to the circuit, attach the mounting base to the electrical junction box, connect the alarm's pigtail connector to the house wiring with 2 wire nuts and plug the connector into the alarm, and rotate the alarm into its mounting base. Then restore power and you should see the green power monitor light above the test button.

The instructions require a magnifying glass to read and the 9V battery is a tight fit.

The alarm can be wired to other alarms in the same residence, so one alarm triggers the others. Green monitor lamp to verify power. Chirps when the 9V backup battery gets low. 85-decibel alarm. First Alert doesn't list this product on their website - either too new or discontinued? Has 10 year limited warranty.

1 of 1 people found the following review helpful:

1.0 out of 5 stars GARBAGE!!!!! DO NOT BUY, January 16, 2009

By	John Quincy Lawton - See all my reviews (REAL NAME)

I don't know why I did not take the advise of the other reviews. I thought there was no way a product could be reviewed so badly and the manufacturer not fix it. I purchaced 5 and the installation was very easy and that is where the good ends. Alarms emit long beeps throughout the day at random times, waking children, making me investigate at all hours of the night and causing doubt on the proper working order of the alarms and system. Believe all the bad reviews and don't purchase a headache.