This First Alert SC9120B Smoke & Carbon Monoxide Detector is a reliable and efficient device that guarantees your safety in case of fire or gas leaks. Equipped with a battery backup, it ensures that it is always functioning even during power outages. The device comes in a sleek white color, and its hardwired feature means that you do not have to worry about changing batteries frequently. The SC9120B model features a user-friendly interface that makes it easy to use and has a single replaceable battery. It is designed to fit in any home and is perfect for anyone looking to secure their home from potential hazards. The detector is also packed with features that make it stand out from other detectors in the market. Invest in this First Alert device today and have peace of mind knowing that your home is secure from any potential danger.