Today's building intercom products, whether they are analog systems or digital systems, generally contain a zone control function. However, there are still many people. The type of defense zone is not very clear. Here, let's take a look at relevant knowledge.

The common defense zones of the alarm system include the access zone, the immediate zone, the internal zone, and the 24-hour zone.

1) Access zone: also known as delay zone After the defense is deployed, the system will provide a delay time for the access zone. After the delay time expires, the delay zone system alarm is triggered. When the delay zone is triggered upon entry, the controller will beep during the entry delay time. As a warning signal for disarming the system, the system must be disarmed within the set delay time. Otherwise, it will alarm. This zone type is suitable for the user's entry/exit keyboard.

2) Instant zone: The alarm will be triggered immediately after the system is armed. There is no delay time.

3) Internal zone: After the system is armed, if the internal zone is triggered before entering the zone, the internal zone will enter the delay state and will not alarm immediately. The delay time of the zone is the same as that of the access zone. If an internal zone is triggered before the access zone is triggered, the system will immediately report an alarm. This zone type is suitable for the user to manipulate the keyboard, such as detectors installed in the entrance, lounge or hall. It is suitable for preventing intrusion in the hall before attempting to arm the system or attempting not to enter or leave the defense area.

4) Perimeter zone: For external doors and/or windows, an alarm will be issued immediately when the zone is triggered.

5) 24-hour defense zone: It will not be affected by arming and disarming. The zone will be triggered and immediately alarmed.

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