Combination Smoke & Carbon Monoxide Alarm XP01-W with Large Silence Button

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