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 & Carbon Monoxide Detector combines smoke and carbon monoxide detection in one device, which is cost-effective and space-saving. It uses advanced photoelectric and electrochemical sensors to detect smoke and carbon monoxide accurately. The alarm operates on a hardwired power source with a backup from two AA batteries, ensuring continuous protection even during power outages.

The interconnectivity feature is beneficial for larger homes, as it allows all connected alarms to sound simultaneously when one is triggered, enhancing safety. The alarm volume is robust at 85 decibels, ensuring that it is loud enough to be heard in an emergency. The three LED notifications provide clear indicators of the alarm's status, making it easy to understand its condition at a glance.

Installation is straightforward thanks to the included mounting hardware and user guide, though some users might need professional help if they are not comfortable with electrical wiring. The device also includes a test and hush button for easy testing and silencing of false alarms. While it doesn't have advanced smart features like app connectivity, it meets rigorous safety standards and includes a 10-year limited warranty, which indicates its reliability. It might not be suitable for those looking for the latest smart home integrations. The self-testing feature is a plus, but it doesn't replace the need for regular manual testing. This detector is ideal for homeowners seeking a reliable, dual-function smoke and carbon monoxide alarm with essential safety features without the need for smart home compatibility.

The Kidde Hardwired Smoke & Carbon Monoxide Detector offers a comprehensive solution with its dual detection capability for both smoke and carbon monoxide. This feature is particularly beneficial for households looking to save space and cost by avoiding the need for separate detectors. The device is hardwired, ensuring consistent power supply, and includes a 10-year battery backup, which eliminates the need for frequent battery changes and potentially saves money in the long run. This setup makes it highly reliable, especially during power outages.

The interconnectivity feature is a significant safety advantage, as it ensures all connected alarms sound simultaneously, providing early warning throughout the home. The device also boasts advanced sensing technology to minimize false alarms, which is useful in highly active areas like kitchens. LED indicators and an 85-decibel alarm ensure clear communication of the alarm status, enhancing its usability. However, the installation might be challenging for those not familiar with electrical wiring, potentially requiring professional help.

The sensor types (photoelectric and electrochemical) are effective but might not cover all possible fire types as comprehensively as some other models available. While it offers self-testing features, users are still required to perform manual tests weekly. Additionally, the lack of smart features like app connectivity might be a drawback for tech-savvy users wanting real-time notifications on their smartphones. This makes it a solid choice for those seeking a reliable, dual-function smoke and carbon monoxide detector with interconnectivity and long-term power backup, albeit with some considerations for installation and smart feature limitations.