10 Best Wifi Smoke Alarms 2025 in the United States

The First Alert SMICO100-AC is a hardwired smoke and carbon monoxide alarm that utilizes advanced ionization detection technology. One of its notable strengths is its precision detection, designed to minimize false alarms from cooking while providing early warnings for fires. It features an interconnect system, meaning if one alarm sounds, all interconnected alarms in the home will also sound, increasing safety in larger homes.

Its quick connect plug allows for easy installation without the need for rewiring, and the included battery backup ensures the alarm continues to operate during power outages. The test/silence button adds convenience for regular maintenance and silencing nuisances.

However, this model does not offer WiFi connectivity or smart home integration, which means it lacks features like mobile alerts and remote monitoring that are common in other WiFi-enabled smoke alarms. Additionally, it relies on a corded power source with an alkaline battery backup, which may require frequent battery replacements. The First Alert SMICO100-AC excels in detection and ease of installation, but its lack of connectivity options may limit its appeal to those looking for more advanced smart home features.

The Kidde Hardwired Smoke & Carbon Monoxide Detector is a dual-purpose device that provides safety by detecting both smoke and carbon monoxide. Its hardwired setup with a battery backup ensures continuous operation even during power outages, which is essential for consistent safety. The device is designed to reduce false alarms, especially from cooking, which is a notable advantage in busy households.

The interconnect capability means that if one alarm sounds, all connected alarms will sound, ensuring you are alerted throughout your home. The 85-decibel alarm and LED notifications (green, amber, and red) make it easy to understand and respond to the device's status. A self-testing feature ensures the alarm is functioning correctly, though it should still be manually tested weekly. The device is relatively easy to install and maintain, with a test and hush button to manage false alarms.

One downside is that it lacks WiFi connectivity and smart home integration, which means it cannot be monitored or controlled via a mobile app. This might be a significant drawback for users looking for more technologically advanced features. Additionally, the hardwired installation might be challenging for those who are not comfortable with electrical work. The inclusion of a 10-year limited warranty adds value, but knowing the exact date the device was powered on is crucial for warranty purposes. This detector is best suited for users who prioritize reliable, dual-purpose detection over advanced smart home features.

The Kidde Hardwired Smoke & Carbon Monoxide Detector is designed to provide dual protection against both smoke and carbon monoxide with the convenience of being a single device. This is particularly useful for ensuring home safety without the need for multiple alarms. The hardwired setup with a 10-year battery backup means you won't need to worry about frequent battery changes, saving time and cost over the decade-long life of the alarm.

Voice alerts add clarity, specifying whether smoke or carbon monoxide is detected, which can be crucial in an emergency situation. Additionally, its interconnect capability ensures that if one alarm sounds, all connected alarms will alert you, providing comprehensive coverage throughout your home. The device is designed to minimize false alarms from common sources like cooking, which can be a frequent annoyance with other detectors.

The LED notification lights and a loud 85-decibel alarm provide clear visual and auditory indicators of the alarm status. Despite some limitations, the Kidde detector offers robust protection and ease of use, making it a strong choice for users who prioritize reliability and clear alerts.