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 RadioLINK+ compatible. The can wirelessly interconnect with other linked alarms via a robust RF mesh network, ensuring that when one alarm is triggered, all connected units sound simultaneously for enhanced whole‑home protection.