Alarm Systems
It is a system designed to detect intrusions (unauthorized entry) in a certain area.
They are used in residential, commercial, and industrial properties to protect against theft (theft) or property damage.
They range from small stand-alone noise generators to complicated multi-area systems with computer monitoring and control.
A typical home alarm system consists of a series of devices placed at the entry points of a house to detect when the door has been opened. The alarm will sound when the system is activated. Similar contacts are placed on or near windows and will set off the alarm if the glass is broken to enter.
Fact: Security alarms show a correlation with a decreased on theft.
Alarm systems can be combined with surveillance systems (CCTV) to automatically record intruder activities, and can interact with access control systems for power-locked doors automatically.
Wired, Wireless and Hybrid Systems
Installation of a wireless magnetic switch,by a given door
The trigger signal from each sensor is transmitted to one or more control units, either through cables or wireless connections.
Wired system
Wired system
Useful when the sensors (such as PIRs, smoke detectors, etc.) require external power to function properly.
They can be more expensive to install but have the advantage that if properly wired, they are tamper-proof.
Wireless system
Wireless system
They are easier to install and are less expensive, because they use battery-powered transmitters.
But they can reduce the reliability on the system, if the batteries are not given proper maintenance.
Depending on the distance and materials of construction, one or more wireless repeaters may be required to reliably send the signal to the alarm panel.
Its advantage is for those who rent or move frequently. And that protects against a thief who cuts a cable or against failures of an Internet provider.
Hybrid systems
Hybrid systems
Use both wired and wireless sensors to achieve the benefits of both. Transmitters can also be connected through the premises’ electrical circuits to transmit coded signals to the control unit (line carrier). The control unit usually has a separate channel or zone for burglar and fire sensors, and better systems have a separate zone for every different sensor, as well as internal trouble indicators (mains power loss, low battery, broken wire, etc.).
What does a common home alarm system include?
What does a common home alarm system include?
The control panel. This is the main hub for system wiring. It contains the backup battery and is where the phone lines are connected if the system is monitored.
The keypad. This allows you to arm and disarm the system by entering a numeric code.
The siren. It is activated when the system detects an intruder, it can be visual, auditory or silent, it sends a signal to the monitoring agency.
Motion detectors. They are used to detect changes in a room due to a presence.
Door and window contacts. Detect when a door is opened or a window is opened or broken.
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