Wireless interlinked smoke alarm provides warning of fire via a network of alarms. One alarm will work singularly, additional alarms can be wirelessly connected, when one alarm sounds they all sound. Interlinks with the FireAngel Connect gateway, providing real-time notications via the FireAngel Connect app. Thermoptek technology detects all types of fire and alerts with a loud, clear alarm. Mains powered with a back-up 10-year sealed for life Panasonic battery in case of power cut. Ideal for use in hallways, landings, bedrooms, living rooms and dining rooms. Interlinked via Wireless or when Hardwired 230V AC Mains-Powered with Battery Backup 10-Year Sealed Tamperproof Lithium Integrated Battery 85dBA Alarm at 3m Test/Hush Button Sends Real-Time Notifications Locate Feature Thermally Enhanced Optical Sensor Backwards Compatible with Wi-Safe2 Devices Interlinked via Wireless or when Hardwired 230V AC Mains-Powered with Battery Backup 10-Year Sealed Tamperproof Lithium Integrated Bat...