10 Best Co Smoke Detector Combo 2025 in the United States

The First Alert BRK SC9120B-6 Hardwired Smoke and Carbon Monoxide Detector offers reliable dual protection against smoke and carbon monoxide hazards. Its hardwired setup with a battery backup ensures continuous operation even during power outages, which is essential for safety.

The inclusion of adapter plugs simplifies installation by eliminating the need for rewiring, making it user-friendly. The alarm distinguishes between smoke and CO alerts through a light indicator, adding clarity in emergencies. A single test button allows for easy regular maintenance checks, ensuring the system's reliability.

The side-load battery compartment and tamper-resistant locking brackets enhance security and ease of use. The universal mounting brackets also streamline the installation process. This detector is well-suited for those seeking straightforward, dependable protection without the need for smart technology.

The X-Sense 10-Year Battery Combination Smoke Carbon Monoxide Alarm Detector is a reliable choice for those looking to enhance home safety. It combines both a photoelectric smoke sensor and an electrochemical carbon monoxide sensor, ensuring accurate detection of both smoke and CO. The device is powered by a sealed lithium battery that lasts for 10 years, meaning you won't have to worry about frequent battery changes or power outages.

Its large LCD display offers real-time CO levels and battery status, which can be very useful for monitoring your environment effectively. Additionally, the unit is easy to install as it requires no rewiring, making it ideal for those who prefer a simple, hassle-free setup. It meets UL 217 and UL 2034 safety standards, adding to its credibility. This model (SC07) is standalone and does not support interconnectivity with other alarms or Wi-Fi, which means it might not be the best choice if you're looking for an interconnected home safety system. For those features, you'd have to look for other models like SC07-W or SC07-WX. It comes with a 60-day money-back guarantee, a 5-year warranty, and lifetime technical support. If you're okay with a standalone unit and want something that provides long-term, maintenance-free operation, this detector is a solid option.

The X-Sense Wireless Interconnected Combination Smoke and Carbon Monoxide Detector offers several strong features for home safety. It combines both photoelectric and electrochemical sensors, ensuring reliable detection of both smoke and carbon monoxide. The built-in 10-year lithium battery is a significant advantage, providing peace of mind without the need for frequent battery changes. Additionally, the wireless interconnectivity means if one detector is triggered, all units in the network will sound the alarm, offering comprehensive coverage across your home.

Its range of over 820 feet and the capacity to connect up to 24 devices make it suitable for larger homes or properties. The informative LCD is another plus, displaying real-time CO levels and battery status, which can be crucial for monitoring and maintenance. However, the lack of Wi-Fi connectivity might be a downside for users looking for smart home integration and remote monitoring. Also, while it has a strong audible alarm, it does not support visual alerts for the hearing impaired.

The build is robust with heat-resistant PC plastic material, ensuring durability. Given its features, this detector is well-suited for homeowners who need reliable, interconnected smoke and CO detection without the need for smart home integration. The 5-year quality warranty and lifetime technical support add to the product's appeal.