Aico Ei3016 Smoke Alarm-MainsPowered with Lithium Back-up, White.Ex. Date 2036 Optical smoke alarm, with a high performance optical smoke sensor, for detecting slow, smouldering fires. In addition, the smoke chamber design, integrated insect screen and automatic dust compensation help reduce the risk of false alarms. Interlinked via Wireless or when Hardwired (Wireless Module Required) 230V AC Mains-Powered with Battery Backup 10-Year Sealed Tamperproof Lithium Integrated Battery 85dBA Alarm at 3m Test/Hush Button Built-In AudioLINK Data Extraction Technology Easi-Fit Base
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