Universal Security Instruments USI/SMCO/10YR 10-Year Battery Combination Smoke and Carbon Monoxide Detector with Voice Alarm and LED Warning Light

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About This Product

Experience advanced, long-lasting protection with the USI Combo Smoke, Fire, and Carbon Monoxide 10-Year Battery Alarm. Featuring Sensing Plus® Multi-Criteria Detection, this photoelectric alarm precisely identifies both slow-smoldering and fast-flaming fires for early detection and quick response. An integrated electrochemical sensor monitors carbon monoxide, providing complete home safety in a single, compact device.

The 10-year sealed battery ensures uninterrupted protection even during power outages, eliminating the hassle of frequent battery replacements. Instead of constant low-battery chirps, you’ll receive a single end-of-life alert after 10 years to remind you it’s time to replace the unit.

The voice alarm delivers clear, audible alerts that distinguish between fire, carbon monoxide, and maintenance reminders, while advanced technology minimizes nuisance alarms from everyday activities like cooking. A convenient test/silence button allows easy alarm control when needed. With UL certification and over 50 years of proven safety expertise, USI delivers dependable, high-performance home protection you can trust.

Highlights

• Sensing Plus® Multi-Criteria Detection – Quickly identifies both slow-burning and fast-flaming fires. 

• Voice Alerts – Announces fire, CO, and replacement warnings for clear, real-time guidance. 

• 10-Year Sealed Battery – Provides continuous power and peace of mind without battery changes. 

• End-of-Life Alerts – Notifies you when it’s time to replace the alarm after 10 years. 

• Superior False Alarm Resistance – Reduces nuisance triggers for uninterrupted safety. 

• Certified Safety – Meets UL 217 (9th Edition), UL 2034 (4th Edition), FHA, HUD, and NFPA standards. 

• Easy Installation – Simple setup for quick and secure mounting. 

• Tamper-Proof Design – Prevents unauthorized removal for added security. 

• Dust/Paint Cover – Protects the alarm during renovations or construction. 

• 85 dB Alarm – Loud, attention-grabbing alert easily heard throughout your home. 

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