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Regular: $79.95 |
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Price: $53.99 | |||
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The First Alert BRK SC9120B Hardwired Combination Smoke and Carbon Monoxide Alarm uses an electrochemical CO sensing technology and Ionization sensor for smoke detection. It includes a 9-volt battery for continued function in the event of a power outage, and it features a test/silence button, tamper-resistant locking brackets, and a universal mounting bracket. This CO smoke detector can be connected to other compatible BRK and First Alert hardwired smoke and carbon monoxide detectors. Its latching alarm indicator automatically identifies which unit initiated the alarm–even after the conditions that set off the alarm have subsided.
Detects Smoke and Carbon Monoxide
Designed to meet the latest construction requirements, the First Alert Combination Smoke and Carbon Monoxide Alarm detects two threats, smoke and carbon monoxide. Lights on the face of the alarm tell you what the threat is, and false alarms can be silenced with a single button.
Connect to Other Alarms for Greater Coverage
This hardwired combination smoke and carbon monoxide detector can be connected to other compatible BRK or First Alert CO smoke detectors within a single-family residence. Once one alarm is triggered, all connected CO smoke alarms will sound. The latching alarm indicator on the CO smoke alarm automatically identifies which unit initiated the alarm–even after the conditions that set off the alarm have subsided.
Easy to Install and Maintain
The First Alert Combination Smoke and Carbon Monoxide Alarm integrates with existing wiring and features a universal mounting bracket that makes installing the unit quick and easy. The side-load battery compartment makes changing the 9-volt battery simple. Tamper-resistant locking pins prevent unauthorized disabling of the CO smoke alarm.
First Alert Hardwired Smoke/Monoxide Alarm SC9120B
In this guide, we'll be showing you how to install First Alert Hardwired Smoke and Carbon Monoxide Alarms. Here are a few items you'll need before starting the installation process: Needle-nose pliers or utility knife, screwdriver, wire stripper, wire nuts and a ladder.
Hardwired Smoke or Carbon Monoxide Alarm Requirements:
To begin, turn off power at the junction box and connect your alarm to the building's electrical wiring.
Black wire (hot) |
Attach to black wire on power connector |
White wire (neutral) |
Attach to white wire on power connector |
Orange wire (interconnect) |
Standalone (single-station) alarm: This wire is not needed; tuck the orange wire into the junction box. Interconnected alarms:
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If you are installing more smoke or carbon monoxide alarms, you'll want to repeat the process throughout the building. Interconnected smoke and co alarms must meet all requirements:
The same fuse or circuit breaker must power all interconnected alarms.
Up to 18 compatible detectors can interconnect, with a limit of 12 smoke alarms.
The total length of wire interconnecting the alarms should be less than 1,000 ft. (300 meters). This type of wire is commonly available at hardware and electrical supply stores.
All wiring must conform to all local electrical codes and NFPA 70 (NEC). Refer to NFPA 72, NFPA 101, and your local building code for more information.
Interconnect wiring diagram:
If you have any doubts or reservations about these interconnect requirements, please contact an experienced electrician to install your wiring and hardwired alarms.
Once you've installed your hardwired alarms, you'll want to restore power to the junction box. Under regular operation, the power indicator light on the alarm will shine/blink to indicate that it is receiving AC power.
Here's how you can test standalone or interconnected alarms:
Standalone Alarms: Press and hold the Test/Silence button until the unit triggers an alarm.
Interconnected Alarms: Press and hold the Test/Silence button until the first unit triggers an alarm. All interconnected detectors should sound off. Repeat this process to test each alarm in the interconnected series.
Other reasons include: It could be a different device or appliance such as a security system, monitor, carbon monoxide alarm, or other device which has a similar low battery or alert signal. Some of the same factors that cause unwanted alarms can cause intermittent alarms: dust and insects in the alarm or power interruptions in hardwired alarms. Improper wiring on AC or AC/DC smoke alarms. AC alarms will chirp every 5 seconds if the interconnect wire is grounded. The orange interconnect wire should NEVER be grounded; it should only be used to interconnect other smoke alarms or compatible devices.
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Average score based on 296 reviews
Reviewed: 01/05/2021 by WILLIAM COLLINGWOOD
Perfect retrofit for my existing alarm.
easy swap
Reviewed: 12/01/2020 by movses kvryan
three wires 123 easy in place excellent performance sounded swift with kitchen smoke and as a set, great sound travel.although i rather have without battery only hard wire my house get a lot of fog all battery usually bleed and dry cell type even die out to fast i guess to much vapor pressure.prefer they more compact but these are the best i found in the market and even the best price FIRST ALERT store made it all happen for me on my strict budget and need for the best product.thank you for the chance to get this project out the way.Sincerely Moses
Fire and mono detector
Reviewed: 10/22/2020 by Craig Thornsberry
Best service From First Alert and product model for the application. I will buy from them in the future.
Reviewed: 08/04/2020 by Jerry Leonard
Very easy to install
So easy!
Reviewed: 07/29/2020 by Dawn Bauer
Everything from ordering to installation was seamless.
Reviewed: 07/14/2020 by Robert Williams
Had not received the produces yet!
correct
Reviewed: 06/18/2020 by Greg Eames
Ordered the exact one I had. Received it in good time, unpacked it, pulled battery safety tab, crawled up ladder, plugged it in. and it worked. What I paid for. Thanks
Smoke alarm and carbon monoxide detectors
Reviewed: 06/01/2020 by Tammy Jackson
Very satisfied and the price is great
Replaced my old smoke detectors and upgraded
Reviewed: 06/01/2020 by Juan Reyna Jr.
I replaced my old smoke detectors in my home and upgraded them to the smoke and Carbon Monoxide alarm SC9120B. I have a hard wired system and they fit perfectly. Definitely feel safer for my family with these.
Reviewed: 05/02/2020 by Romel patell
Easy to install, quick delivery