The First Alert SC9120B Hardwired Smoke & Carbon Monoxide Detector with Battery Backup is a reliable and essential home security device. With a white color and sleek design, this detector is powered by a 10-year lithium battery with a battery backup feature to ensure continuous protection during power outages. The detector combines both smoke and carbon monoxide detection capabilities, providing peace of mind for you and your family. The hardwired design adds an additional layer of security, making it a dependable choice for safeguarding your home.