Let the other alarms know. Interconnection needs commissioning.
With primary interconnection enabled, a detector sends an alarm to the hub, which starts the other configured fire sounders. Compatible FireProtect 2 units can also support a fallback radio alarm between detectors if the hub link is lost. Fallback requires firmware 5.59.2.xx or later, the marked supporting hardware and proper setup. Do not assume separate unpaired detectors automatically interconnect.