Domestic and Foreign Alarm Hosts Develop from Less Defense Zones to Multiple Defense Zones

It is also a major trend for the development of alarm hosts to develop from a few defense areas to multiple defense areas. Combining with China's special national conditions, in order to meet the actual requirements of users of various large-scale application environments such as intelligent buildings, large-scale residential communities, large-scale shopping malls, judicial agencies, and cultural libraries in the new situation, the capacity of defense zones for many alarm hosts is continuously increasing.

There is no shortage of large scalable systems in imported or domestic alarm systems. The imported PC4020 alarm host, such as Canada DSC, can provide 16 basic on-board wired defense zones, can also be extended to 128 zones through addressable bus, wireless, etc., and can be divided into 8 sub-users for 8 independent users. System; similar systems such as the United States Honeywell's VISTA-l20/250 alarm host, there are nine on-board cable defense zone, while the use of four-wire, bus and wireless zones to expand 128/250 zones; another Bosch DS7400 alarm The host computer is equipped with eight defense zones on the board. It can expand to 240 defense zones with a two-wire bus (excluding the detector power cable) and has a total of 248 defense zones. The most prominent domestic products, such as Inventec's AW-BM1600 large-scale control panel, have 16 defense zones on the board, and can expand up to 1008 single host computers through multiple buses and 62 different types of modules. The defense zone can also be set as 32 subsystems. Each subsystem acts as an independent small alarm system that can independently arm and disarm and can serve 32 independent users. The above-mentioned alarm host has a common feature that can be controlled by programmable relays or circuit outputs to control appliances, CCTV systems, and other security subsystems, enabling alarm linkage.