First Alert SMI100 Smoke Alarm (1-Pack) Review: Analysis & User Insights
In-depth review of the First Alert SMI100 Smoke Alarm (1-Pack). Analyzing features, 24,577+ user reviews, pros & cons. Is it a safe choice? Find out.

Quick Look: At a Glance
- Detection
- Ionization Sensor
- Power Source
- Battery-Operated
- Installation
- Easy to Install
- Battery
- 9V Alkaline Included
- Features
- Test/Silence Button
- Overall Rating
- (24,577 ratings) See Breakdown 4.5 / 5
- Price (New)
- $15.98 (Subject to change)
- Price (Used)
- From $13.98 (Save with Used - Like New)
Over 4K+ bought bought recently!
Deep Dive: Features & Specifications
The First Alert SMI100 smoke alarm offers reliable protection with its easy-to-install, battery-powered design, providing peace of mind for your home.
- Precision Detection Technology: Advanced sensing to reduce cooking nuisance alarms and provide early warning in case of a fire.
- Battery-Operated Convenience: Easy to install and maintain, with a front-access battery compartment for quick replacements.
- End-of-Life Warning: Alerts you when it's time to replace the alarm.
- Test/Silence Button: Allows for efficient testing to ensure the alarm is working properly.
Product Description: The First Alert SMI100 is a straightforward, battery-operated smoke alarm designed for ease of use and reliable fire detection. Its precision detection technology helps to minimize false alarms, making it a practical choice for everyday use. The simple installation and battery replacement process, along with the end-of-life warning, make it user-friendly. The inclusion of a test/silence button ensures that you can quickly verify the alarm's functionality. It's a solid choice for those seeking a dependable smoke alarm without complicated features.
User Review Analysis (Based on 24,577 Reviews)
Based on over 24,577 customer reviews, here's a breakdown of common themes:
👍The Positive Reviews (76% 5-Star)
- Easy Installation: Many reviewers found the installation process simple and straightforward.
- Good Value: Customers often mentioned the product's affordability.
- Includes Battery: The inclusion of a battery was a convenient feature.
- Compatibility: Compatible with existing First Alert mounts.
- Reliable Functionality: Many users reported the alarm working perfectly.
👎Common Criticisms
- Some customers reported the alarms failed after a couple of years.
- A few users experienced false alarms.
- One user had a negative experience with DHL delivery.
Pros & Cons Summary
➕Pros
- Easy to install and replace batteries.
- Includes a battery.
- Precision detection reduces nuisance alarms.
- Compatible with existing First Alert mounts.
- Good value for money.
➖Cons
- Some users reported alarms failing after a couple of years.
- Potential for false alarms, as reported by some users.
- Ionization sensor may not be as effective for all types of fires compared to dual-sensor alarms.
Available Options & Pricing
This review focuses on the First Alert SMI100, Battery-Operated Smoke Alarm, 1-Pack (ASIN: B0CJMP7WHH). Other options include:
- Size: 1-Pack, 2-Pack, 3-Pack
- Buying Options: Available "New" for around $15.98 and "Used - Like New" starting from $13.98. Prices may fluctuate.
Current Availability: In Stock. New & Used (3) from $13.70 FREE Shipping on orders over $35.00 shipped by Amazon.
Who Should Buy the First Alert SMI100, Battery-Operated Smoke Alarm, 1-Pack?
This product is a great fit for:
- Homeowners looking for an easy-to-install smoke alarm.
- Individuals seeking a reliable and affordable fire safety solution.
- Those who appreciate the convenience of a battery-operated device.
- People who want a smoke alarm that includes a battery.
This alarm may not be the best choice if you prefer a dual-sensor alarm or are looking for advanced features like interconnected alarms.
⚖️ The Recoguru Verdict
The First Alert SMI100 is a practical and budget-friendly smoke alarm, ideal for those seeking a simple, reliable solution. Its ease of installation and included battery are definite advantages. While it has received mostly positive feedback, potential buyers should be aware of the reports of product failure after a few years.
Recommended for homeowners who prioritize ease of use and affordability. Consider a dual-sensor model for enhanced protection.
Ready to Make Your Decision?
Check it out for yourself!
🛒 Buy the First Alert SMI100, Battery-Operated Smoke Alarm, 1-Pack (1-Pack) on Amazon