Signs of a Faulty Intruder Alarm
Many intruder alarm systems are equipped to provide some form of notification when they are malfunctioning. Simple faults are often accompanied by some kind of signal by the alarm system, such as an intermittent beep (usually indicating a battery that is running out somewhere within the system, or a malfunction indicated for another reason.
More complex issues are harder to spot, however, and can often lead to complete failure or multiple false alarms. Many alarm panels will have some way of displaying specific faults that can be interpreted by an alarm technician.