Smoke Detector Carbon Monoxide Detector Combo 10 Year Battery | ETL listed to UL 217 10th Ed. & UL 2034 5th Ed., 10-year sealed battery, EOL alert, photoelectric, electrochemical CO, 85dB

**10-Year Sealed Battery with End-of-Life Alert** The integrated sealed lithium battery provides continuous power for a decade, eliminating the need for battery replacements. When the device approaches the end of its operational period, a distinct audible signal alerts you that it is time to replace the detector, maintaining ongoing safety. **UL 217 10th Edition & UL 2034 5th Edition Certified** Certified to meet the latest safety standards UL 217 10th Edition and UL 2034 5th Edition. The 10th Edition incorporates improved resistance to nuisance alarms from cooking and more rigorous criteria for modern synthetic-fueled fires, offering enhanced detection performance for contemporary households.

**Photoelectric Smoke & Electrochemical CO Detection** Dual-sensor protection in a single unit: a photoelectric smoke sensor with a dual-LED optical chamber identifies slow-smoldering fires while minimizing false alarms from cooking, and an electrochemical CO sensor tracks carbon monoxide levels from 0 to 2000 ppm with 1 ppm resolution.
Smoke sensitivity: 1.652. 29%/ft obscuration. **ETL Listed 4 Certifications** Independently tested and certified to U. S. standards (UL 217 Ed. 10 + UL 2034 Ed. 5) and Canadian standards (CAN/ULC S531 Ed. 5 + CSA 6.19 ). The housing is constructed from 94V-0 flame-retardant material. **Simple Installation & Residential Application** Comes with a quick twist-and-click mounting bracket no wiring is necessary. The compact 4.9 -inch diameter fits tidily in any room. It features an 85dB alarm with an LED indicator and a test/silence button. Appropriate for bedrooms, living rooms, hallways, and other residential indoor areas where both smoke and carbon monoxide risks may exist