10 Best Wired Smoke Alarms 2025 in the United States

The First Alert SMICO100-AC Interconnect Hardwire Combination Smoke & Carbon Monoxide Alarm is a reliable option featuring advanced sensing technology that reduces false alarms from cooking. It uses ionization sensors to detect smoke and carbon monoxide, providing an early warning in case of a fire emergency.

One of its significant benefits is the interconnectivity feature, meaning when one alarm goes off, all connected alarms will sound. This is particularly useful in larger homes for comprehensive safety coverage. Additionally, the quick connect plug allows for straightforward installation without the need for extensive rewiring, making it user-friendly for most homeowners.

Its battery backup ensures continuous protection even during power outages, which is a crucial safety feature. The test/silence button adds convenience by allowing easy testing and silencing of the alarm when needed. Users who prefer a simple, dependable smoke and CO alarm will appreciate what this model offers.

The Kidde Hardwired Smoke Detector with a 10-Year Battery Backup is a solid choice for those looking for a reliable smoke alarm. It uses a photoelectric sensor, which is effective in detecting slow, smoldering fires and reduces false alarms often caused by cooking. The detector is hardwired, ensuring continuous power with a 10-year lithium battery backup that offers peace of mind without the need for frequent battery changes. This can save users up to $40 over the detector's lifespan. The alarm is loud at 85 decibels, ensuring that it will be heard throughout the house.

Additionally, the interconnectivity feature means that if one alarm goes off, all connected alarms will sound, which is crucial for quick evacuation in case of a fire. The 3 LED notifications provide clear status updates: green for normal operation, amber for errors, and red when smoke is detected. The inclusion of a test and hush button allows for easy testing and silencing of false alarms. Installation is fairly straightforward with the provided mounting hardware, although users should be comfortable working with their home's electrical system or consider hiring a professional.

On the downside, the alarm's reliance on being hardwired might be a limitation for some, and the sensor type may not be as effective in detecting fast, flaming fires compared to ionization sensors. Lastly, the unit is made of plastic, which might not appeal to everyone, but it does keep the weight light at 0.59 pounds. In summary, this Kidde smoke detector offers robust features and reliable performance, making it suitable for most households seeking enhanced safety.

The First Alert SMI100-AC is a hardwired smoke alarm designed for reliable home fire safety. Utilizing ionization sensor technology, it is particularly effective in detecting fast-flaming fires. One of its standout features is the advanced Precision Detection technology, which significantly reduces false alarms from cooking, making it more practical for use in kitchens or near cooking areas.

Additionally, the interconnectivity feature ensures that when one alarm goes off, all compatible alarms in the network will sound, providing a comprehensive warning system throughout the house. This smoke alarm also comes with a battery backup, ensuring continuous protection during power outages, which is crucial for maintaining safety at all times. The alarm indicator helps to quickly identify which unit triggered the alarm, which can save time and reduce confusion during an emergency.

Installation is made easy with the Quick Connect Plug, allowing users to set it up without the need for complex rewiring. However, potential users should note that this model uses ionization sensors, which might be less effective at detecting smoldering fires compared to photoelectric sensors. Additionally, while the battery backup is a great feature, it does require periodic battery changes, which might be seen as a minor inconvenience. Despite these points, the First Alert SMI100-AC remains a highly suitable choice for those looking for straightforward installation and robust home fire safety features.