First Alert Smoke Alarm | Slim Design | 10-Year Battery | SM210

 

Elevate safety in your home with the First Alert SM210 Smoke Alarm, featuring a slim design and worry-free maintenance thanks to its integrated 10-year sealed battery. Designed to detect dangerous smoke quickly, it uses a reliable photoelectric sensor to respond efficiently to smoldering fires, offering early warning when you need it most. Measuring approximately 5.1 inches in diameter and about 1 inch deep, this unit blends discreetly into ceilings and walls while still meeting strict safety standards.

Engineered to emit an 85-decibel alarm (~10 feet), the SM210 ensures audibility throughout your rooms. It meets UL-217 safety requirements and includes a test and silence button for regular checks and to quiet nuisance alarms without removing the unit from mounting. The 10-year battery is sealed, meaning there’s no need for periodic battery changes; and the alarm signals its end of life so you’ll know when the unit needs replacing.

Installation is simple with mounting hardware included; it’s ideal for bedrooms, hallways, kitchens or near any sleeping area. The slim profile keeps it low profile and less obtrusive—yet no less capable. First Alert’s commitment to quality means you get peace of mind with consistent performance and long lifespan in a reliable, low-maintenance design.

Key Features:

• Slim profile (~1-inch depth) with compact 5.1-inch diameter suitable for tight spaces
  

• 10-year sealed lithium battery—no battery replacements needed
  

• Photoelectric sensor for faster detection of smoldering fires
  

• Loud 85 dB horn audible at ~10 feet; includes test/silence button
  

• End-of-life warning signals when replacement is needed
  

Make the First Alert SM210 your safety solution and trust it to protect your home with minimal upkeep.

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Returns of new, unused items are accepted for
a refund or exchange within 30 days of purchase. Read our return policy here.