RadioLINK Panel Interface. Connects into Fire Alarm Panel. 12-24V DC powered- Links Aico alarms to a Panel System- 12-24V DC powered – from the panel system- RadioLINK Wireless interconnection- 5 year guarantee- Creates a two-way communication between Aico alarms and a panel system- Connects wirelessly with all other Aico wireless interconnection products and is hard wired into the Panel system- Aico EI413