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The BRK SC9120B hardwire combination smoke and carbon monoxide alarm detects two hazards with one simple unit. Carbon monoxide (CO) is a colorless, odorless, deadly gas. It can be emitted by sources including gas or oil furnaces, gas clothes dryers, water heaters, fireplaces, wood stoves, charcoal grills, gas ranges, and space heaters. A clogged chimney, improper venting, and attached garages can also cause carbon monoxide accumulation. The BRK SC9120 hardwire combination smoke and CO alarm with battery backup includes these features: Quick plug in power connector for easy installation, 120 volt AC inter connectable (with maximum 18 compatible devices 12 other compatible smoke alarms + 6 compatible devices like bells, horns, repeaters and door closers. If one unit triggers an alarm, all smoke alarms in the series will sound. Single test/silence button which both silences a non-threatening alarm or low battery warning and allows you to test the unit's functionality. Automatically performs internal test of functionality. Latching alarm indicator which automatically identifies which unit initiated the alarm. Battery drawer lock and mounting bracket lock for tamper resistance. AC power indicator and alarm indicator light. Low battery warning ''chirp'' and missing battery tab. 9 volt battery backup for peace of mind during power outages. All BRK Electronics carbon monoxide alarms are listed to UL Safety Standard 2034 for residential carbon monoxide alarms. Includes 9 volt backup battery. 10 year limited warranty. Includes: One combination smoke and CO alarm, one 9 volt battery, and users manual.Hardwired combination CO smoke alarm features battery backup for constant monitoring.
Frequently Asked Questions
- Q: What are the dimensions of the FIRST ALERT BRK SC9120B smoke and carbon monoxide detector? A: The dimensions are one point nine inches in length, five point six inches in width, and five point six inches in height.
- Q: How does the battery backup work in this carbon monoxide detector? A: Yes, it includes a nine volt battery backup that ensures continuous monitoring even during power outages.
- Q: Is the FIRST ALERT BRK SC9120B hardwired or battery-operated? A: It is hardwired with a battery backup, providing reliable power and functionality.
- Q: How do you install the FIRST ALERT BRK SC9120B detector? A: You can easily install it using the quick plug-in power connector and universal mounting brackets included.
- Q: Can this smoke and carbon monoxide detector connect to other alarms? A: Yes, it can connect to a maximum of eighteen compatible devices, including twelve other smoke alarms.
- Q: What features make the FIRST ALERT BRK SC9120B user-friendly? A: It has a single test/silence button for easy operation and a side load battery compartment for convenient battery replacement.
- Q: How do I clean and maintain the FIRST ALERT BRK SC9120B detector? A: To maintain it, regularly wipe the exterior with a damp cloth and ensure the vents are free of dust.
- Q: Is there a warranty for the FIRST ALERT BRK SC9120B smoke detector? A: Yes, it comes with a ten-year limited warranty, providing peace of mind regarding its durability.
- Q: Are there any hazardous materials in the FIRST ALERT BRK SC9120B? A: Yes, it contains radioactive material classified as excepted articles, but it is safe for residential use.
- Q: What if my FIRST ALERT BRK SC9120B detector starts beeping? A: If it beeps, it may indicate smoke, carbon monoxide detection, or a low battery warning; check immediately.
- Q: What should I do if my detector arrives damaged? A: Contact customer support to report the damage, and they will guide you through the return process.
- Q: Is the FIRST ALERT BRK SC9120B suitable for large homes? A: Yes, it can interconnect with multiple units, making it ideal for larger spaces needing comprehensive coverage.
- Q: How often should I test the FIRST ALERT BRK SC9120B detector? A: You should test it at least once a month to ensure it is functioning properly.
- Q: Can the FIRST ALERT BRK SC9120B be used in places with high humidity? A: Avoid using it in high humidity areas like bathrooms, as moisture can affect its performance.
- Q: What type of sensing technology does the FIRST ALERT BRK SC9120B use? A: It features advanced electrochemical sensing technology for carbon monoxide and ionization sensors for smoke detection.

