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Ecoey Smoke & Carbon Monoxide Detector Alarm, 10 Year Battery Operated Combination Smoke & CO Dual Sensor with Silence Function,FJ183-A,2 Packs

Make sure this fits by entering your model number. 10 YEARS LIFE: This smoke and carbon monoxide detector contains 1 built-in 3V lithium battery, and could keep for 10 year without replacing to protect environment and save time. Low battery warning will open when you need to change smoke detector 2-IN-1 FUNCTION: Photoelectric smoke sensor and electrochemical CO sensor work independently, smoke alarm prior to CO alarm. Smoke monoxide detector detects fast and slow-burning fires with minimized false alarms, provides you the ultimate protection