10 Best Wired Smoke Alarms 2026 in the United States

The Kidde Hardwired Smoke Detector with Battery Backup is a solid choice for anyone looking to install a reliable wired smoke alarm in their home. It uses ionization sensor technology, which is particularly good at detecting fast-flaming fires that produce invisible particles. The alarm is loud enough at 85 decibels to alert most people effectively. This model connects to your home's 120V wiring but also includes a 9V battery backup, so it continues working during power outages — an important safety feature.

You can interconnect up to 24 Kidde devices, including smoke, carbon monoxide, and heat alarms, allowing the entire system to alert you if any unit detects trouble. Installation is relatively straightforward, and the front-load battery door makes changing the backup battery quick and hassle-free. The test-silence button on the face of the alarm lets you easily check functionality or temporarily hush false alarms, adding convenience.

This unit focuses on basic smoke detection and does not include advanced smart features like Wi-Fi connectivity or app alerts. Its maximum operating temperature is 100°F, which is typical but something to watch for in warmer environments. The device holds important safety certifications and comes with a 10-year limited warranty from the start of power-on, though the manufacturer has discontinued this model. The Kidde alarm offers dependable, easy-to-use smoke detection with solid interconnectivity and backup power, making it a good fit for homes wanting a tried-and-true wired system without the complexity of smart tech.

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 Smoke Detector, Hardwired Smoke Alarm with 9-Volt Battery Backup, is a reliable choice for home safety. It uses ionization sensor technology to detect invisible fire particles and includes an electrochemical sensor for CO gas, making it versatile for different types of threats. The device operates on a 120V wired power source with a 9-Volt battery backup, ensuring it remains functional even during power outages. With an 85-decibel alarm and a red LED indicator, it effectively alerts you to smoke or fire, although the alarm volume might not be the loudest available.

The Test-Hush button is a useful feature for testing the alarm and silencing false alarms, which could be particularly helpful in reducing nuisances from cooking or steam. One of its strengths is the interconnectivity capability, allowing you to connect up to 18 Kidde smoke, heat, or CO alarms, and possibly 6 strobe lights or relay modules. This is great for larger homes or buildings that need comprehensive coverage. Installation is relatively straightforward with ceiling or wall mounting options, and the included battery and brackets make the setup process easier.

However, the lack of advanced smart features means it might not integrate with modern smart home systems. The 10-year limited warranty on the alarm (excluding the battery) provides peace of mind regarding its durability. Weighing only 9.6 ounces and with compact dimensions, it won't be obtrusive in your home. This makes it an ideal choice for those looking for a reliable, interconnected, and easy-to-install smoke alarm system without the need for smart home integration.