Alarm monitoring system is designed to detect intrusion, such as unauthorized entry, into a building or other areas such as a home or school. Security alarms used in residential, commercial, industrial, and military properties protect against burglary (theft) or property damage, as well as personal protection against intruders. Security alerts in neighbourhoods show a connection with diminished robbery. Car alarms likewise help protect vehicles and their contents. Prisons also use security systems for the control of inmates. Some alert systems are dedicated to anti-theft.
The combination system provides fire protection and crime prevention. The intruder alert system records intruder activity in combination with a closed circuit television surveillance (CCTV) system and interfaces with an electrically locked door access control system. There are many types of security systems. Homeowners usually have a small, self-contained noise maker. These devices can also be complex multipurpose systems with computer monitoring and control. It can also include bidirectional audio, allowing communication between the control panel and the monitoring station.
The simplest alarm consists of at least one sensor to detect an intruder and an alarm device to indicate an intrusion. However, typical building security devices use the following components:
· On-site control unit (PCU), alarm control panel (ACP), or simply panel: the "brain" of the system. It reads the sensor input, tracks the arm / arm release status, and signals the intruder. Modern devices typically have one or more computer circuit boards in a metal case. Many new networks often use sealed outdoor plastic boxes. Others have a controller built into the keypad or other human machine interface.
· Sensor: A device that detects intruders. The location of the sensor is at the edge of the protected area, within it, or both. Sensors can detect intruders in a variety of ways. For example, sensors can monitor door and window openings, and monitor movement, sound, vibration, and other obstacles in empty indoor spaces.
· Alarm devices: These indicate the alarm status. Most often, these are bells, sirens, or flashing lights. Alarms serve the dual purpose of alerting residents to intrusions and stopping potential robbery. These devices can also alert residents to fire and smoke conditions
· Keypad: A small device, typically wall-mounted, acts as a human-machine interface to the system. In addition to the keys, keyboards usually have an indicator light, a small multi-character display, or both.
· Connections between components. The connection can be direct wiring to the control unit or wireless connection to a local power source. Read more…