【10-Year Product Life】The smoke detector has 1-year 9V battery. This smoke alarm can be used for ten years with continuous battery replacement. Working smoke detector cut the risk of dying in a home fire by 50% while a home fire starts every 83 seconds!...

High Accuracy & Reliability: This carbon monoxide detector conforms to ETL standards and has a built-in advanced electrochemical sensor that detects dangerous CO levels more accurately and responds more quickly. In case of danger, the carbon monoxide detector gives an alarm of no less...