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Intrusion Alarm

An intrusion alarm systems are used to detect the presence of intruders and safeguard homes, offices and other places, where they are installed with the help of highly efficient sensors. These intrusion alarm system have an alarm that can include a large number of different contact switches, PIR, motion detectors, sounders, speech dialers, glass breakage detectors, and other types of detection devices.

  Intrusion Alarm

In easy word this alarm can detect any unauthorized person in the area and warn the control room.

Intrusion Alarm

Wired & Wireless Control Panels:
Intrusion alarm control panel is the brain of the security system. It is typically placed in an area that is out of the way like a basement, attic or office. The motherboard and additional components such as radio receivers, backup power supply and zone expanders are inside this metal box which is locked. You will have little or no interface with the alarm control.

  Intrusion Alarm

The intrusion alarm control panels available in the market range from small compact type which incorporates a hooter/siren and can accommodate a few different types of Sensors (detectors) to a more advanced type which can perform more complex functions like, automatic dialing to a phone, cellular phone and convey a pre-recorded message informing about intrusion, in addition to or in place of, local audio visual alarm. Central control panels can use wired, wireless, or a combination of wired and wireless devices to communicate with sensors or alarms. The type you use depends upon many factors such as ease of wiring, building construction, and cost. The advance intrusion alarm versions also have the capability of functioning with user codes for arming and disarming and of switching over to built-in power supply in case of power failure.

Arming / Disarming system:
Arming an intrusion alarm, in a loose sense, is switching on the system and disarming is disabling (switching off) the system. These functions can be performed using a simple switch or by using a keypad in which the user is supposed to enter a password.

Keypads are used as input device. The key-pad based system requires the user to enter correct password to perform any function. Key protection & control could be a problem in case there are many authorized 'individuals'.

PIR Sensors:
Passive Infrared sensor (PIR sensor) is an electronic device which actually triggers as soon as somebody enters. It measures infrared light radiating from objects in its field of view.

Apparent motion is detected when an infrared source with one temperature, such as a human, passes in front of an infrared source with another temperature, such as a wall. Inexpensive and easy to use, it's ideal for alarm systems, motion-activated lighting, and holiday props.

Panic Switch:
Panic devices are manually activated units that you can activate if you need immediate assistance. These units can either be silent or activate loud alarms. If you desire the silent version then you must have your system monitored. Panic devices can be fixed buttons, portable wireless buttons, or a special combination with a keypad.

Magnetic Contacts:
Magnetic switches are the most common sensing devices for sensing opening and closing of doors and windows. They are cheap and reliable. Such sensors consist of two parts - A contact switch that is installed on the door/window frame and an activating magnet that is mounted on the door. The magnetic switch is held in no-alarm contact position when door/window is kept closed. These are installed on a door or window in such a way that opening the door or window causes the magnet to move away from the contact switch which activates the alarm. The magnetic switches normally have both 'Normally open' & 'Normally Closed' contacts for easier integration with existing systems. A series of such sensors can cover the whole house including every door/window/ventilator.

Exit Switch:
A switch that is used to initiate a Request to Exit. A push button, switch mat, proximity detector, or other device which starts a timer in the reader interface electronics when someone is leaving through a controlled entry or exit. The timer bypass (shunts) the door-open detector for a selected period of time.

Glass break detector:
Glass Break Acoustic detectors "listen" for the specific sound pattern generated when glass breaks, while Vibration type sensors "feel" for the vibration of breaking glass. The vibration type of glass break detector is fixed on to the glass surface and is designed to respond to the specific higher frequency energies generated in breaking glass and not to the low-frequency vibrations produced while hitting the wall.

Vibration detector:
Most of the sensors detect opening of a door, window or breakage of glass or movement of human beings. But it is equally important to detect if there is a break-in attempted through walls, ceiling or floors. This can be detected with the help of vibration detectors. The detector operates on the principle of resonance of frequency. When the external impulse frequency, due to hammering or chiseling, matches with the resonance frequency of the sensing element, the alarm is triggered. False alarms are avoided with proper setting of the intensity controller. The vibration detector can be fitted to windows, door frames, walls, ceilings etc.

Gas-leak detectors:
Gas leak detectors identifies the source of gas leaks quickly and easily, and enables you to quantitatively measure any leakage found

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