- New
First Alert SMCO210 10-Year Sealed Battery Smoke & Carbon Monoxide Alarm, Slim Profile, 1-Pack
✨Free delivery✨
✨Free delivery✨
The First Alert SMCO210 is a reliable and space-saving smoke and carbon monoxide alarm designed with a slim profile for modern homes. Featuring a long-lasting 10-year sealed battery, this combination alarm eliminates the worry of frequent battery changes, offering continuous protection. Its advanced sensing technology detects smoke and carbon monoxide quickly to keep your family safe.

Showcase of the First Alert SMCO210 featuring its sleek and slim design. This image highlights the alarm’s aesthetic integration into home environments while offering robust safety features. The compact form factor ensures an unobtrusive fit on ceilings or walls.

Installation demonstration of the First Alert SMCO210. This image emphasizes the alarm’s versatility in placement options, easily mounting on the ceiling or wall. Its design facilitates straightforward installation, making home safety accessible and convenient.

Detailed close-up of the smoke sensing component within the alarm. Designed for fast detection of smoke particles, this sensor ensures immediate alerts in the event of fire hazards, enhancing your home safety with precision technology.

Carbon monoxide sensor close-up showing the alarm’s ability to detect harmful CO gas. This critical safety feature operates silently and continuously, providing peace of mind by alerting households to invisible threats of carbon monoxide.

Side profile view showcasing the ultra-slim design of the alarm. This thin and unobtrusive shape blends seamlessly into home interiors, maintaining elegant aesthetics without compromising safety or functionality.

View of the sealed 10-year battery compartment with tamper-proof design. Eliminates battery replacement hassles and increases reliability, ensuring uninterrupted protection throughout the alarm’s lifespan.

Ideal placement examples demonstrating optimal positioning for the First Alert SMCO210. Ensure maximum detection efficiency by placing the alarm in recommended areas within your home, keeping your family protected from smoke and carbon monoxide dangers at all times.

Recommended placement to maximize detection efficiency. This visual guide helps home users determine the best locations for installing the smoke and carbon monoxide alarm to ensure pervasive and reliable safety coverage throughout the living space.

Step-by-step installation guidance for the First Alert SMCO210. This instructional image illustrates clear and simple mounting procedures to get your alarm set up quickly and correctly for trusted home protection.

Demonstration of testing the alarm’s functionality. Regular testing ensures the smoke and carbon monoxide detection system operates reliably at all times, providing reassurance for your household's safety.

Guidance on replacing the First Alert SMCO210 after its 10-year lifespan. This visual aids users in understanding the lifecycle of the alarm and completing timely replacement to maintain ongoing protection.
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| Size | S | M | L | XL |
|---|---|---|---|---|
| Men | 7-10 | 10-13 | 13-15 | 15-17 |
| Women | 7-9 | 10-12 | 13-14 | 15-16 |