Universal Security Instruments 10-Year Sealed, Battery Operated, 2-In-1 Smoke and Fire Detector, Multi-Criteria Detection

Microprocessor Virtually Eliminates Nuisance Alarms Caused by Everyday Cooking Smoke, Steam, etc. Detection of Polyurethane Foam in both Slow Smoldering and Fast Flaming Fire. Immunity to High-Voltage Current Surges. No Batteries to Change. Maintenance-Free Battery Power Provides 10-Years of Safety Protection. Conforms to New UL Standard 217 8th Edition Requirements.|Artificial intelligence used to classify smoke and fire profiles|Detects both fast-flaming and slow-smoldering fires|Conforms to UL standard 217 8th edition|Lithium-free 10-year permanent power is safer and more eco-friendly|Tamper resistant design provides a higher level of security|Quick find alarm origination feature easily identifies originating alarm to sound|10-year product end of service life warning - sounds when it is time to replace detector|10-year limited warranty|Silence/test button|LED power status indicator