![]() VBAT (+12V) and GND are the power source terminals for the alarm control panel and the external sounder. The BELL signal is the output signal from the alarm control panel, used for triggering the alarm sounder devices. The STROBE signal is the output from the alarm control panel that will enable the flash lamps from the external sounder. The development of web-based intruder alarm systems from the evolution of the new APIs, and from new languages based on the web 2.0 philosophy will lead to a new level for intruder alarm monitoring and control, with the integration of several new features such as, for example, using signal pre-processing and Geo-localization. By this approach, distributed network intelligence will allow an intruder alarm system to react to multi-signalization intrusion situations in a much more efficient way, being also able to distinguish more accurately real security violations from unadvertedly operations. ![]() Web-based intruder alarm systems may include the use of distributed nets ("grids"), giving each node the ability to dynamically configure its functions within entire respect for the security scope issues. New developments for distributed web-based intruder alarm systems, which can include not only traditional signaling functions but also new "smart" decision functions are challenging thrills today for the intruder alarm designers. Useful project techniques are also described in detail, concerning the installation of intruder alarm systems for homeowners and for commercial/industrial use. This chapter presents today’s state of the art intruder alarm systems and detectors, giving special focus on the several technologies applied, including the wireless transmission and reception of alarm messages and commands through GSM/GPRS, TCP/IP, and the project and development of web-based intruder alarm monitoring and control hardware and software.
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