A zone in alarm terminology is essentially a slot for a sensor. So an 8 zone alarm can have 8 sensors. A 16 zone alarm can handle up to 16 sensors. Alarm pack 1 for instance has 3 sensors, so its using 3 of those 8. You can have another 5 sensors on that alarm should you choose to extend it.
Our home alarm systems give you the option to program zones so that sensors assigned to them cause the system to respond differently when they are triggered. All the alarms we offer can handle “Stay at home” mode and “Away mode”. This allows you to have certain areas of the home armed while you are at home. The technician will organise this for you on the day of the install.