The Ei650iRF is a battery-powered Optical Smoke Alarm. It is able to wirelessly interconnect with any other RadioLINK, RadioLINK+ and SmartLINK products.Optical sensor with dust compensation technologyBuilt-in AudioLINK+Uses built-in RadioLINK+ technology to interconnect and for data extractionConnects wirelessly with all other Aico wireless interconnection productsBattery powered with a sealed-in lithium batteryEasy to fit – twist on base and multi-fixings with an anti-tamper locking option10-year lifeGrade F1 and compliant with Scottish legislationKitemarked to BS EN 14604:2005