The Ei600 series can be easily installed throughout the property on escape routes, on each storey, in corridors and in closed rooms to give warning of fire without the need of any electrical wiring. All Alarms in this series are powered by a built-in 10-year Lithium battery which is automatically connected when the Alarm is fitted to its mounting plate. The Ei600 series Alarms are AudioLINK+ enabled. This feature allows the user to download information from the Alarm through the use of a smart phone App