Summary: As people awareness of security strengthens and the level of the management improves. more and more banks. super markets. hotel. bus or railway stations. ports have installed the alarm system. So as to listen into. oversight. and alarm. Once the accident happens. The system can alarm and begin to record automatically. And this can offer the most valuable information for bust the case.
The science is developing quite fast now. All the improvements of science will bring a lot of changes to the society. And the improvement of science will change the lives of people gradually. With the rapid progress of computer technology. TV technology. Communication system and the internet. The earth has become the “global village”. The development of high and new technologies will surely ask the whole alarm system undertaking for higher and further requirements. And the alarm system not only is the gather of Surveillance and alarming. But also it will permeate into any place of the world. And the passive alarming system cannot satisfy the requirement of the defence. So the system will add stronger ability of control.
