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Overview

Hardwired combination alarm detecting both smoke and carbon monoxide for comprehensive home protection. Designed for continuous power with battery backup support. Provides strong audible alerts for emergency situations. Ideal for residential installation in bedrooms, hallways, and common living areas.

First Alert SC9120BA Hardwired Smoke & Carbon Monoxide Alarm

Model: S-E-1210
Web Code: 19788188
Sold and shipped by | 3.2 seller rating (6 reviews)

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Warranty

Check with the manufacturer for details.

For Quebec residents: See the Availability Guarantee disclosure in the Specifications section below.

The First Alert SC9120BA hardwired smoke and carbon monoxide alarm offers dual protection by detecting both smoke and CO hazards in one integrated unit. Designed for residential installation, it connects directly to your home’s electrical system for continuous power and includes battery backup to maintain operation during outages. When smoke or dangerous carbon monoxide levels are detected, the alarm emits a loud audible warning to ensure immediate awareness. Suitable for bedrooms, hallways, and living spaces, this combination unit enhances overall household safety. Built for dependable performance and reliable monitoring, it provides comprehensive protection for your home and family.

Product Condition
Brand New

For Quebec residents – Disclosure under the Consumer Protection Act

In compliance with Bill 29, Best Buy and third-party sellers on Best Buy Marketplace do not guarantee the availability of replacement parts, repair services, or maintenance information for any products. Coverage provided through any Best Buy Protection programs and applicable manufacturer warranties, if any, remain in place. Please contact the manufacturer directly for information about their availability guarantee.

Shipping Charges

Free standard shipping on all orders.

Processing Time

Most items ship within 2 business days after an order is placed*. Allow additional time for shipping to your address.
*Please note: If an item you ordered becomes unavailable, you'll be notified and a full refund will be processed within 2 business days.

Shipping Area Restrictions

Shipping is not available in the following areas*:
  • No restrictions in Canada
*Please note: Shipping area restrictions may vary for large items. If an item can't be shipped to your address, we'll let you know during the checkout process.