home security alarms
The control unit is the main operating panel for your home security system. This unit receives the signals from the sensors placed around your home, and triggers the alarms or contacts the home security center to notify them of any trouble whenever appropriate. The control unit may be powered by electricity
that runs in your home, or by battery power. Some systems are set up so that if the power in your house goes out, a battery backup will kick in and run the control unit until power is restored. Once the power flips back on, the backup battery system will automatically recharge. The sensors, or switches, are the second
part of the security system. The most basic alarm systems have these sensors fitted in the frames of windows and doors so that if they are opened, the circuit is broken and the alarm is triggered. Some are installed in a way that allows them to detect if someone tries to break in through a window by shattering the glass or removing one of the panes. Others may detect motion inside or outside of the home. The third essential part of a home security system is the alarm. There are many different options as far as which type of alarm you can have installed.
While in the novel 1984 surveillance of the population is presented as something the government puts into place to control the society for the governments benefit, the reality in today’s world is that data mining of social network pages, email, location information, individual search histories and data bases that include information of interrelated people goes beyond governmental involvement. Termed participatory surveillance, individuals using sites such as Facebook voluntarily provide personal information about themselves in a profile and knowingly give permission for other sites to access their profiles in order to gain access to news, weather, and other information or even to be able to play games online. Most social networking sites ask their users to provide these kinds of details. This information commonly appears in casual digital conversations within given social networking communication platforms. Consequently, personal information about people is not something necessarily hidden that must be uncovered or retrieved using exotic technologies, human agents or advanced bugging equipment. People themselves are knowingly publishing this information on public websites accessible by almost anyone with internet access and often available without cost.