Guides

Best Battery Smoke Detectors 2026: The First Alert SA511CN2-3ST is the best battery smoke detector for most homes - 10-year sealed lithium battery means you never replace the battery, dual-sensor coverage catches both smoldering and flaming fires, and built-in CO sensing covers two hazards in one unit.

Hardwired smoke detectors connect to 120V household wiring with battery backup — eliminating the dead-battery failure behind 25% of residential fire deaths. We ranked 12 models including First Alert BRK 3120B, Kidde i4618, and Nest Protect Wired by sensor type, interconnect range, CO sensing, and value.

Smart smoke detectors add phone alerts, automatic self-testing, and voice notifications to standard UL 217 detection — keeping you informed even when away from home. We ranked 12 top models including Nest Protect, First Alert Onelink, Ring listener, and X-Sense by sensor type, ecosystem compatibility, and reliability.

CO Detector Placement Guide 2026: Every home with fuel-burning appliances, an attached garage, or a fireplace needs carbon monoxide detectors. The NFPA requires CO alarms on every level of the home and outside each sleeping area.

Best Fire Extinguishers 2026: The Amerex B500 is the best fire extinguisher for most homes and small businesses - its all-metal construction, rechargeable design, and 10-year warranty make it a true lifetime investment.