3-Pack Interconnected Smoke & Carbon Monoxide Alarm XP01-W w/ Silence Button

X-Sense 10 Years Battery Wireless Interconnected Combination Smoke and Carbon Monoxide Alarm with Over 820 ft Transmission Range, Large Silence Button, XP01-W, 3-Pack ENTIRE HOUSE NOTIFICATION: If one alarm goes off, all other interlinked alarms will follow suit, alerting you to danger regardless of where you are WIDE COVERAGE FOR FULL HOME PROTECTION: Interlinks with up to 24 X-Sense smoke, CO, or combination alarms in a network, ensuring your entire house is fully protected 2-IN-1 PROTECTION: Built with a photoelectric smoke sensor and an electrochemical CO sensor to protect your home from 2 potentially deadly threats BUILT-IN 10-YEAR BATTERY: Uninterrupted 24/7 monitoring with a 10-year sealed lithium battery, freeing you from frequent battery replacement