4 Pack Smoke and Carbon Monoxide Detector with Test Button, 85dB Loud Beep, LCD Display, Battery-Operated Smoke Detector Carbon Monoxide Detector Comb

Equipped with advanced photoelectric and electrochemical sensors, this smoke and carbon monoxide detector responds swiftly to both slow-burning fires and harmful carbon monoxide gas. It's designed for early warning for your family day and night The large LCD of smoke detector shows real-time carbon monoxide levels when CO is detected. In standby mode, the screen stays off to save energy while the green LED blinks once every 60 seconds—ensuring normal function without disturbing your rest This smoke detector carbon monoxide detector combo delivers an audible alert louder than 85dB along with flashing red LED signals when smoke or CO reaches hazardous levels—giving you time to react fast in emergencies Three indicator lights of smoke alarm keep you informed: green for normal operation, red for smoke/CO alerts and low battery warnings, and yellow to show fault status. Stay in control with clear visual signals anytime Use the convenient test button to check the battery and alarm functions of your combination smoke carbon monoxide alarm detector. Recommended for bedrooms, basements, kitchens, and living spaces for complete home coverage

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