10 Best Smart Smoke Detector 2025 in the United States

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 Smoke and Carbon Monoxide Detector Combo offers reliable 2-in-1 protection by combining smoke and carbon monoxide detection in one device. It uses photoelectric and electrochemical sensors, which are effective for detecting smoke and CO respectively, making it a good choice for family safety. One of its biggest strengths is the wireless interconnection feature allowing up to 24 alarms to link together. This means if one alarm detects danger, all connected alarms will sound, providing better home coverage.

It does not support Wi-Fi, so you won’t get smart home app notifications or remote alerts, which might be a drawback if you want advanced smart features. The device is powered by a sealed 10-year lithium battery, meaning you won’t need to worry about changing batteries often, which adds convenience and reduces maintenance. Installation is straightforward since it’s battery-powered and wireless, though linking multiple alarms requires understanding the RF interconnection process.

The detectors are made from heat-resistant, durable materials, ensuring long-term reliability. This product suits those looking for dependable, easy-to-install smoke and CO protection with excellent inter-device communication but without the complexity or cost of full smart home integration.

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.