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The First Alert SC9120B Hardwired Combination Ionization Smoke and Carbon Monoxide Alarm with Battery Backup delivers both smoke and carbon monoxide detection in a single unit. This 120-volt AC smoke detector uses an ionization smoke sensor to reliably detect smoke from hot, fast-flaming fires. It also features an advanced electrochemical sensor that detects carbon monoxide leaks from multiple sources such as faulty fuel-burning appliances and blocked chimneys. If a threat is detected, the alarm sounds a loud siren that helps alert you to danger. Designed to be hardwired directly into the electrical system of your home or facility, this 120-volt hardwired smoke detector features a backup battery that helps keep the alarm functioning even in the event of a power outage. A universal mounting bracket makes installation easy and helps hide drywall cutouts, while tamper-resistant locking pins keep the alarm secure. And thanks to the convenient test/silence button, you can easily check whether the alarm is functioning properly and mute false alarms. This smoke and carbon monoxide alarm can integrate with up to 12 other First Alert or BRK hardwired alarms and features a latching indicator that identifies which unit triggered the alarm. Ideal for coverage of larger areas, this pack of 12 alarms can help you protect your entire home or facility from carbon monoxide leaks and fires.
Frequently Asked Questions
- Q: What are the dimensions of the First Alert SC9120B smoke and carbon monoxide detector? A: The dimensions are fourteen point forty-three inches in length, six point nineteen inches in width, and twelve point sixty-three inches in height.
- Q: What is the voltage of the First Alert SC9120B? A: The voltage is one hundred twenty volts AC, ensuring reliable operation when connected to your home's electrical system.
- Q: How many detectors are included in the First Alert SC9120B package? A: The package includes twelve detectors, providing comprehensive coverage for your home or facility.
- Q: How do you install the First Alert SC9120B smoke detector? A: Installation is easy with the included universal mounting bracket, allowing you to hardwire it directly into your electrical system.
- Q: Does the First Alert SC9120B have a battery backup? A: Yes, it features a battery backup to ensure continuous monitoring even during power outages.
- Q: Is the First Alert SC9120B suitable for larger areas? A: Yes, it can connect with up to twelve other compatible BRK or First Alert alarms, making it ideal for larger spaces.
- Q: How do you maintain the First Alert SC9120B smoke detector? A: Regularly test the alarm using the test/silence button and ensure the battery is functioning, especially during power outages.
- Q: Is the First Alert SC9120B safe for family use? A: Yes, it complies with UL standards and features tamper-resistant locking pins for added security.
- Q: What should you do if the First Alert SC9120B alarm sounds? A: Immediately evacuate the area and check for smoke or carbon monoxide sources, as the alarm indicates a potential danger.
- Q: Can the First Alert SC9120B be used in a home with pets? A: Yes, it is safe for homes with pets and can help protect against fire and carbon monoxide hazards.
- Q: What type of sensor does the First Alert SC9120B use? A: It uses an ionization smoke sensor for smoke detection and an advanced electrochemical sensor for carbon monoxide detection.
- Q: How loud is the alarm on the First Alert SC9120B? A: The alarm sounds at eighty-five decibels, providing a clear and loud warning when smoke or carbon monoxide is detected.
- Q: What happens if the First Alert SC9120B arrives damaged? A: Contact the retailer for return or replacement options if the product arrives damaged.
- Q: Is there a warranty for the First Alert SC9120B? A: Yes, it typically comes with a manufacturer's warranty, so check the product details for specific terms.
- Q: How do you silence a false alarm on the First Alert SC9120B? A: You can silence a false alarm by pressing the test/silence button on the unit.

