video security systems

"Silent alarm" redirects here. For the Bloc Party album with the same title, see Silent Alarm (Album).

Burglar (or intrusion), fire and safety alarms are found in electronic form today. A system of sensors is connected to a control unit, which in turn connects to a means for announcing the alarm, hopefully to elicit some response. Some systems are dedicated to one mission, others handle fire, intrusion, and safety alarms simultaneously. Video Security Systems & Equipment. Sophistication ranges from small, self-contained noisemakers, to complicated, multi-zoned digital systems with color-coded computer monitor outputs. Many of these concepts also apply to portable alarms for protecting cars, trucks or other vehicles and their contents (i. e. , "car alarms"). See also fire alarm control panel for specific fire system issues. Feel free to help yourself with the widest online selection of surveillance
cameras, spy camera, dvr card, digital security systems, digital video recordersSearch. Burglar alarms are sometimes referred to as alarm systems, see burglar alarm control panel for a discussion of hard-wired burglar alarm system design.

System Connections

The trigger signal from each sensor is transmitted to one or more control unit(s) either through wires or wireless means (radio, line carrier, infrared). Wired systems are convenient when sensors (such as smoke detectors) require power to operate correctly, however, they may be more costly to install. Entry-level wired systems utilize a Star network topology, where the panel is at the center logically, and all devices "home run" its wire back to the panel.

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