Conventional fire alarm systems have been around for many years. They range from simple 1 or 2 zone systems, to systems with over 100 zones. The largest panel we currently manufacture is 48 zones.
Conventional detection offers a good basic system, ideal for small applications, or projects on a tight budget.
The detectors in a zone (or area) of the building are all connected to the same pair of wires. If any of these detectors reports an alarm, a single indication is shown on the control panel, meaning that the exact location of the alarm is not shown.
The sounders (including sounder bases) are wired on a separate circuit.
An end of line unit is fitted to the last device in each circuit (Detection Zone, or sounder), in order to monitor the line for breaks.