The alarm output could be local, remote, or a hybrid of the two depending on the use case. In the event of a fire or attempted break-in, local alarms can serve as a useful evacuation notice by using indoor and/or exterior sounders (such as a motorised bell or electronic siren) and lights (such as a strobe light). False alarms are common due to the proliferation of alarm systems (particularly in automobiles), and many city dwellers choose to ignore them rather than investigate or report them. Therefore, it's possible that you won't receive any feedback at all. Lights and sirens may not help much in remote regions when no one is around to hear the alarm and the nearest emergency personnel may arrive too late to prevent losses.