Experience unparalleled protection with the USI Hardwired Combo Smoke, Fire, and Carbon Monoxide Alarm with 10-Year Battery Backup. Equipped with Sensing Plus Multi-Criteria Detection, this advanced photoelectric alarm accurately identifies both slow-burning and fast-flaming fires, ensuring early detection and rapid response. An included electrochemical sensor detects carbon monoxide, for a single compact home safety solution. This hardwired alarm sends alerts to compatible hardwired alarms in the home for comprehensive coverage. The 10-Year sealed backup battery ensures continuous protection during power failures and replaces annoying low-battery chirps with a single end-of-life alert after 10 years to remind you it’s time to replace your smoke alarm. This alarm features a voice alarm, offering clear guidance differentiating between fire and CO alerts and replacement reminders. Advanced technology reduces nuisance alarms, minimizing disruptions from activities like cooking. Should you experience a false alarm, easily silence it with the test/silence button. With UL certification, you can trust in the reliability and performance of USI Hardwired Combo Alarms. Invest in peace of mind and protect your loved ones with this advanced home safety solution. With over 50 years of experience as a leader in home safety, USI provides reliable, long-lasting protection for your home.