10 Best Hardwired Smoke Detector 2025 in the United States

The FIRST ALERT BRK SC9120FF Smoke and Carbon Monoxide Detector is designed to provide comprehensive safety for your home. It features dual sensing technology, using both an electrochemical sensor for carbon monoxide and an ionization sensor for smoke detection, which ensures accurate identification of potentially hazardous conditions. The unit's interconnectivity allows it to connect with other BRK or First Alert detectors, creating a network of alarms that simultaneously alert you to danger, enhancing home safety.

The hardwired setup with a battery backup ensures continuous monitoring, even during power outages, which is a crucial feature for uninterrupted protection. The alarm volume is notably loud at 85 decibels, providing a clear and unmistakable warning in case of smoke or CO detection. Additionally, indicator lights on the unit's face ensure you can visually confirm the presence of smoke or carbon monoxide.

Although it lacks smart features like app connectivity or voice alerts, it compensates with a user-friendly design. The single test/silence button simplifies operation, while the side-load battery compartment and tamper-resistant locking brackets contribute to straightforward installation. Rigorously tested to meet UL standards, this detector demonstrates reliability and quality, backed by a trusted brand with decades of experience in home safety. The ease of installation further makes it suitable for quick setup, whether by professionals or DIY homeowners. Its strong performance in essential detection and safety makes it a highly reliable option for most households.

The X-Sense Hardwired Combination Smoke and Carbon Monoxide Detector is designed for comprehensive home safety with advanced sensor technology. It combines a photoelectric smoke sensor and an electrochemical CO sensor, which enhances its accuracy in detecting smoke from smoldering fires and dangerous carbon monoxide levels quickly. The hardwired setup with a replaceable 9V battery backup ensures continuous monitoring even during power outages, offering robust reliability.

One key strength is its interconnectivity feature, allowing up to 18 units to be linked together, ensuring that if one alarm goes off, all units will sound, providing full coverage and peace of mind throughout your home. Installation is straightforward with included mounting hardware, making it user-friendly for quick setup. The product's high-quality materials promise a long lifespan of up to 10 years, which is a significant advantage in terms of durability and long-term investment.

This smoke and CO detector is highly reliable, easy to install, and perfect for users prioritizing accuracy and comprehensive coverage but does not cater to those seeking smart home integration.