Stay safe with the First Alert Smoke Alarm, your reliable partner in fire detection for peace of mind.
The First Alert Smoke Alarm is a top choice for home safety, offering dependable fire detection. Its key benefits include a battery-operated design and a test & silence button, making it user-friendly and efficient. With options like the SMI100 and the 9120BFF, you can ensure your home is protected against smoke and fire hazards.
These smoke alarms are versatile, perfect for various settings, from bedrooms to hallways. Their hardwired models provide continuous power, while battery-operated versions ensure functionality during power outages. Enjoy peace of mind knowing you have a reliable fire safety solution.
In this review, we will delve into the features and benefits of the First Alert Smoke Alarm, helping you choose the perfect model for your needs. Learn about its performance, installation, and maintenance tips to keep your home safe.


First Alert Battery Smoke Alarm 1-Pack
First Alert Smoke Alarm: Battery-operated, advanced sensing technology, 2-year warranty.
Benefits
- Reduces cooking nuisance alarms with precision detection.
- Easy installation thanks to battery operation.
- Front access battery compartment simplifies battery replacements.
- End-of-life warning alerts you when it’s time for a replacement.
- Test/silence button ensures the alarm is functioning properly.
Drawbacks
- No hardwired option for those preferring a permanent installation.
- Requires battery replacements which may incur additional costs.
This smoke alarm is a practical pick for small spaces where installation needs to be simple and efficient. It stands out with its advanced sensing technology, minimizing false alarms while ensuring safety. The battery-operated design allows for quick setup without the need for electrical work. The front access battery compartment is a thoughtful feature, making it easy to change batteries without hassle. The end-of-life warning is also a crucial aspect, ensuring you never miss the need for a replacement.
While it lacks a hardwired option, making it less ideal for larger homes or those looking for a permanent fixture, it excels in convenience and reliability for smaller areas. Overall, the First Alert Smoke Alarm is a solid choice for anyone prioritizing safety in compact living spaces.
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First Alert Battery-Operated Smoke Alarm 3-Pack
First Alert SMI100: Battery-operated smoke alarm, compact design, 3-pack, 10-year battery life.
Benefits
- Advanced sensing technology reduces nuisance alarms by distinguishing between smoke and steam.
Drawbacks
- Not interconnected with other alarms in the system.
This smoke alarm is designed for easy installation, making it suitable for various locations in your home. The front access battery compartment allows for quick battery replacements, ensuring your alarm is always operational. The end-of-life warning feature alerts you when it’s time to replace the unit, enhancing safety.
While the First Alert SMI100 excels in functionality, it lacks interconnectivity with other alarms, which could be a drawback for larger homes or those wanting a comprehensive safety network. However, its compact size makes it ideal for small spaces, such as apartments or individual rooms.
A practical pick for small spaces, this smoke alarm offers reliable protection without complicated installation processes. It’s an excellent choice for those looking to enhance their home safety with minimal effort.
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BRK First Alert Hardwired Smoke Detector
First Alert 9120BFF/SMI100-AC Smoke Detector: 12” long, ABS plastic, 2-year warranty.
Benefits
- Holds 5L without tipping.
Drawbacks
- No dishwasher-safe parts.
The First Alert 9120BFF/SMI100-AC Smoke Detector is a reliable and essential safety device for any home. With its hardwired design and battery backup, it ensures continuous monitoring, even during power outages. The ionization sensor effectively detects smoke from fast-flaming fires, providing an 85-decibel alarm that alerts you promptly. This smoke detector can connect to other compatible First Alert devices, ensuring that all alarms sound simultaneously when smoke is detected, enhancing safety throughout the home.
Installation is straightforward, thanks to the single test/silence button and universal mounting brackets. The tamper-resistant locking brackets add an extra layer of security, making it difficult for children to remove the unit. First Alert has a long-standing reputation for safety, being a trusted brand since 1958, which adds to the product’s reliability.
However, it is important to note that there are no dishwasher-safe parts, so cleaning requires manual effort. Overall, the First Alert 9120BFF/SMI100-AC Smoke Detector is a practical pick for small spaces and essential for any household looking to enhance their fire safety measures.
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First Alert 10-Year Sealed Battery Smoke Alarm
First Alert SM210: 10-Year sealed battery, slim profile design, advanced sensing technology.
Benefits
- Reduces nuisance alarms while providing early fire warnings.
- 10-year battery eliminates the need for replacements and low battery chirps.
- Half the depth of a standard alarm for a sleek appearance.
- End-of-life warning alerts you when it’s time to replace the unit.
Drawbacks
- No battery replacement option; entire unit must be replaced after 10 years.
This smoke alarm is a practical pick for small spaces where aesthetics and functionality are important. Its slim design allows for discreet placement while ensuring safety. The advanced sensing technology minimizes false alarms, making it ideal for kitchens or areas prone to smoke. The 10-year sealed battery feature is a standout, providing peace of mind without the hassle of changing batteries. However, it’s essential to note that once the battery life is over, the entire unit must be replaced, which may not be ideal for everyone. Overall, the First Alert SM210 is a reliable choice for those seeking a compact smoke alarm that combines efficiency with a modern look.
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First Alert Battery Smoke Alarm 2-Pack
First Alert SMI100, Battery-Operated Smoke Alarm, 2-Pack: 12” long, ABS plastic, 2-year warranty.
Benefits
- Precision Detection technology minimizes false alarms while providing early warnings.
- Easy installation with battery operation, eliminating the need for wiring.
- Front access battery compartment allows for hassle-free battery replacements.
- End-of-life warning alerts you when it’s time to replace the unit.
- Test/silence button ensures the alarm is functioning properly.
Drawbacks
- No interconnected alarms for a comprehensive safety network.
- No dishwasher-safe parts, requiring manual cleaning.
A practical pick for small spaces, the First Alert SMI100 offers reliable smoke detection with advanced features designed to enhance safety without overwhelming users. Its battery-operated design simplifies setup, making it ideal for renters or those who prefer a straightforward installation. The emphasis on reducing false alarms is particularly beneficial in homes where cooking may trigger unwanted alerts. However, potential buyers should note the lack of interconnected functionality, which could limit safety in larger homes. Overall, the SMI100 is a solid choice for those seeking an effective smoke alarm in compact living areas.
To buy this product, click here.
Faq about First Alert Smoke Alarm:
1: What is a First Alert smoke alarm?
A First Alert smoke alarm is a device designed to detect smoke and alert occupants of potential fire hazards, enhancing home safety.
2: How does a First Alert smoke alarm work?
It uses either ionization or photoelectric sensors to detect smoke particles, triggering an alarm to warn about fires.
3: How often should I test my First Alert smoke alarm?
Test your smoke alarm monthly to ensure it functions properly and replace batteries at least once a year.
4: How long do First Alert smoke alarms last?
Most First Alert smoke alarms have a lifespan of 10 years. After this period, replace the entire unit.
5: What should I do if my First Alert smoke alarm goes off?
If the alarm sounds, evacuate immediately, call emergency services, and do not re-enter until it is safe.
6: Can I silence a false alarm on a First Alert smoke alarm?
Yes, most models have a hush feature to temporarily silence the alarm during false alarms caused by cooking or steam.
7: Where should I install my First Alert smoke alarm?
Install alarms on every level of your home, inside bedrooms, and outside sleeping areas for maximum safety.
Conclusion
First Alert’s Battery Smoke Alarm 1-Pack exemplifies a singular commitment to safety, offering reliability and ease of installation, making it an ideal choice for individual rooms. Conversely, the Battery-Operated Smoke Alarm 3-Pack presents an economical solution for comprehensive coverage, ensuring peace of mind throughout larger spaces with its multi-unit provision.
Both products underscore First Alert’s dedication to safeguarding lives, with advanced features that enhance detection capabilities. Their user-friendly designs and dependable performance solidify their status as paramount choices for fire safety, catering to diverse consumer needs while prioritizing protection.




