Ensure your safety with the First Alert SC7010BA Hardwired Combination Smoke and CO Alarm. This device is engineered with a spread spectrum horn tone, enhancing audibility for those with age-related hearing loss. It seamlessly integrates into your home's electrical system with 120V hardwiring. The advanced photoelectric smoke sensor, featuring Optipath 360 technology, detects smoke from smoldering fires efficiently. Additionally, its electrochemical sensor provides precise carbon monoxide detection. In case of a power outage, the 2 AA battery backup ensures continuous protection. Don't compromise on safety; secure your home with this reliable alarm today!