Alarm System linkage function

fire alarm

What is the alarm system linkage function? How should it be interconnected? The linkage function means that when an alarm event occurs, relevant equipment other than the alarm deviceis triggered to work. For example, The linkage of the fire alarm host will send alarm signal to make the elevator to land on the first floor and open fire shutter, etc. Or when sensing an illegal intrusion, the alarm device will send alarm alert and trigger linkaged camera to take video at the same time. This forms the linkage process of the alarm system.
The linkage of alarm system is generally divided into three forms, they are the spot linkage, active nonactive linkage, centralized linkage and other forms, and in the actual process, the coordination of alarm system and fire linkage system has the following forms:
1. Horizontal linkage control system.
2. Vertical linkage control system.
3. Decentralized control system