A security alarm is a system designed to detect fire or intrusion (unauthorized entry) into a building or other area such as a home, office, stores or school. Security alarms are used in residential, commercial, industrial, and military properties for protection against fire, theft or property damage, as well as personal protection against intruders. Security alarms in residential areas show a correlation with decreased theft and fires.
Some alarm systems serve a single purpose of burglary protection; combination systems provide both fire and intrusion protection. Intrusion alarm systems may also be combined with (CCTV) systems to automatically record the activities of intruders, and may interface to access control systems for electrically locked doors. Systems range from small, self-contained noisemakers, to complicated, multirally systems with computer monitoring and control. It may even include two-way voice which allows communication between the panel and Monitoring station.
| Conventional A conventional fire alarm system Is made up of a number of call points and detectors which are wired to the fire alarm control panel in zones. |
Addressable An addressable fire alarm system has a control panel that can determine exactly which detector or call point has initiated the alarm through a wired detection circuit. |
| Analogue Addressable There are many types of analogue addressable fire alarm system which are determined by the type of protocol which they use. |
Wireless Systems Wireless fire alarm systems use secure, licence-free radio communications to interconnect sensors and devices with the controllers. |
Conventional Fire Alarm:
Conventional fire alarm control panels divide a building into (zones). Each fire detection device is hard-wired individually into the panel. If a fire is detected, the panel will identify the zone in which the detection device was triggered. Conventional fire alarm are less expensive than addressable fire alarm,but can still be costly to install. This type of alarm is best suited to medium-sized buildings like shops, restaurants, and apartment complexes.
Addressable Fire Alarm:
Unlike conventional fire alarm, addressable fire alarm control panels pinpoint the precise location of a fire detection device that has been triggered. While the initial cost of an addressable FACP is higher than that of a conventional fire alarm, addressable fire alarm panels are much easier to install. Addressable fire alarm are best suited to larger buildings like office complexes, arenas, entertainment venues, and other environments in which very specific fire safety regulations must be adhered to.
Fire Alarm Panels:
Fire alarm control panels fall into two general categories: conventional and addressable. Both types of panels link fire alarm system components such as smoke and heat detectors, sprinklers, and fire suppression systems, but they differ in how they identify the location of a fire.In general, fire alarm panels are recommended for medium to large sized buildings, multiple-occupancy apartment buildings, and commercial properties. Even if your building isn't required by law to be monitored, it's still a good idea to consider a fire alarm panel monitoring service. Fire alarms systems are designed to detect fires and get people out of a building safely.
Fire Alarm Detectors Types:
At the core of a fire alarm system are the detection devices, from sophisticated intelligent smoke detectors to simple manually operated break glass units, there are a wide array of different types, but we can divide them into groups including:- Heat detectors
- Smoke detectors
- Carbon Monoxide detectors
- Multi-sensor detectors
- Gas Sensors
- Flame Sensors
- Manual Call Points
Protect people and property with security you can rely on. Different types of intrusion detection system may include cameras, sensors (detectors), locks, and communication equipment.
An active electronic motion detector contains an optical, microwave, or acoustic sensor, as well as a transmitter. However, a passive contains only a sensor and only senses a signature from the moving object via emission or reflection. Changes in the optical, microwave or acoustic field in the device's proximity are interpreted by the electronics based on one of several technologies.
Several types of motion detection are in wide use:
Passive infrared (PIR):
Passive infrared (PIR) sensors are sensitive to a person's skin temperature through emitted black-body radiation at mid-infrared wavelengths, in contrast to background objects at room temperature. No energy is emitted from the sensor, thus the name passive infrared. This distinguishes it from the electric eye for instance (not usually considered a motion detector), in which the crossing of a person or vehicle interrupts a visible or infrared beam. These devices can detect objects, people, or animals by picking up one's infrared radiation.
Microwave:
These detect motion through the principle of Doppler radar, and are similar to a radar speed gun. A continuous wave of microwave radiation is emitted, and phase shifts in the reflected microwaves due to motion of an object toward (or away from) the receiver result in a heterodyne signal at a low audio frequency.Your home is different from everyone else's. And you want the flexibility to secure it your way. A wireless home security alarm system from Stars Tech provides that flexibility, backed by 24/7 monitoring that will have you resting easier, day or night.
Security cameras
Wireless technology gives you the flexibility to place cameras just about anywhere, like near doors or other high-traffic areas, so you have a window into activity in and around your home.Motion detector
An essential part of a home security alarm system, they detect movement in rooms, halls and stairways to alert you of a potential intruder.Door and window sensors
If a door or window is opened when you don't expect it, these sensors will alert you of someone potentially entering your home.-
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