10 Best Interconnected Smoke Alarms 2025 in the United States

The First Alert SMICO100-AC is a 3-pack of smoke and carbon monoxide alarms designed to offer reliable, interconnected home safety. One of its strong points is the interconnectivity feature: when one alarm detects danger, all the alarms sound, providing a quick alert throughout your home. It uses ionization sensors, which are good at detecting fast-flaming fires, and the Precision Detection technology helps reduce false alarms from cooking, which many users will appreciate.

The X-Sense Wireless Interconnected Combination Smoke and Carbon Monoxide Detector is a solid choice for those seeking comprehensive safety solutions in their homes. One of its standout features is the interconnected system; when one unit detects smoke or carbon monoxide (CO), all alarms in the network sound off, ensuring that you receive timely warnings no matter where you are in the house. This is particularly beneficial for larger homes, as you can connect up to 24 devices, creating a wide coverage area. Each unit is equipped with both a photoelectric smoke sensor and an electrochemical CO sensor, providing reliable detection for both hazards.

The X-Sense Smoke Detector, model SD20-W, is a solid choice for those in need of a reliable, interconnected smoke alarm system. One significant strength is its 10-year battery life, which means users can count on continuous protection without the hassle of frequent battery changes. The interconnected feature allows up to 24 alarms to communicate wirelessly, ensuring comprehensive coverage across your home. This can be quite reassuring, as the 85 dB alarm sound is loud enough to wake heavy sleepers if any unit is triggered. Moreover, the use of photoelectric sensors provides better detection of slow-burning, smoldering fires, which can be more common in household settings.