10 Best Smart Smoke Detector 2025 in the United States

The First Alert SMCO210 smart smoke detector offers a robust set of features catering to both smoke and carbon monoxide detection, making it a highly reliable choice for home safety. The advanced Precision Detection technology helps reduce false alarms from cooking, which can be a common annoyance with other detectors. Its 10-year sealed battery is a significant advantage, eliminating the need for battery replacements and preventing the low battery chirps that can be frustrating over time.

The slim profile design is aesthetically pleasing and less intrusive compared to standard alarms, adding to its appeal. Installation is straightforward, which is beneficial for users who prefer a hassle-free setup process. Additionally, the end-of-life warning feature ensures you know when it’s time to replace the unit, maintaining safety without guesswork.

This model does not boast advanced smart features beyond its core functions, such as app connectivity or remote alerts, which could be a drawback for those seeking more integrated smart home solutions. The product is battery-powered, which means it doesn't require wiring but also relies entirely on the included lithium battery. Despite these minor limitations, the First Alert SMCO210 provides reliable protection and ease of use, making it suitable for those prioritizing essential safety features without additional smart connectivity.

The X-Sense Wireless Interconnected Combination Smoke and Carbon Monoxide Detector is designed to provide comprehensive safety for your home. Its main strength lies in the interconnected feature; when one unit detects smoke or CO, all interconnected units will alarm, ensuring that you are alerted promptly no matter where you are in the house. With the ability to connect up to 24 devices, this system can effectively cover larger spaces, making it a great choice for families living in bigger homes.

The smoke detector uses advanced detection technology, combining photoelectric and electrochemical sensors, which enhances its reliability in detecting both smoke and harmful CO levels. The informative LCD display is another plus, showing real-time CO levels and battery status, keeping you informed about the unit’s functionality.

On the practical side, the built-in 10-year battery is a significant advantage, removing the hassle of battery replacements during the lifespan of the unit. Installation is straightforward, as they are screw-in models and lightweight, weighing only 300 grams each.

However, this model does not support Wi-Fi, which may limit smart home integration for users looking for more advanced features such as remote monitoring via smartphone apps. If Wi-Fi connectivity is a priority for you, you would need to consider the alternative model, SC07-WX. Additionally, while the coverage per detector is decent, it is recommended for spaces up to 215-430 sq. ft., so you'll need to ensure adequate placement throughout your home for maximum protection.

The X-Sense Smart Smoke Detector and Carbon Monoxide Detector Combo stands out in the category of smart smoke detectors, particularly for households looking for a comprehensive safety solution. Its interconnected system allows multiple detectors to work together, ensuring that when one alarm sounds, all do. This feature is great for larger homes, making it easier to alert everyone in case of an emergency.

One of the best features is the app integration, which provides instant notifications when an alarm is triggered, along with alerts for low battery and system faults. You can even test or silence alarms through the app, eliminating the need for a ladder. Moreover, the ability to locate the source of the alarm through the app enhances user convenience significantly.

The battery life is another strong point, with a replaceable lithium battery designed to last up to 10 years. This long lifespan combined with the included batteries ensures that you won’t be constantly replacing them. The product does have some limitations. It's battery-operated and not AC hardwired, which could be a drawback for those who prefer hardwired detectors for uninterrupted power. Additionally, while the app functionality is excellent, users will need to set it up properly to fully benefit from its features. The optional Protect+ Premium subscription for 24/7 professional monitoring may be seen as an extra expense for some. Installation is user-friendly, but some may still find connecting multiple units a bit of a challenge.