Tuesday, September 1, 2009

What is Alarm System?




Why should I have a security alarm system?

Having a security alarm system may decreases the chances of a burglary. Even if the alarm system does not keep a burglar from breaking in, it may cause the burglar to stay a shorter amount of time.

What Should a Security Alarm System Include?

Most systems rely on a combination of contacts placed at doors and windows and motion sensors.

It is best that all exterior potential points of entry have contacts that sense when they are open. Glass break sensors are also available and recommended.

Motion sensors should not be used as the primary means of detection because they do not detect someone until they are already in the house.

The basic elements of a standard home security system include:

  • Control panel: This is where the system wiring terminates, the backup battery is located and where it is connected to the phone lines if it is a monitored system.
  • Keypad: This is where the system is armed and disarmed.
  • Siren
  • Inside motion detector: These sense changes in a room caused by human presence. Special motion detectors are available for people who have pets.
  • Door and window contacts:; This sounds the alarm when the door or window is opened (and the system is on).
  • A central monitoring station (Company): If the system is monitored, and the alarm is set off, the control panel sends a message to a central monitoring station, which is manned 24 hours a day.

    After attempting to contact the homeowner, the central monitoring station will contact the police, fire department, or medics.

    There is usually a monthly fee for this service.

Additional items that can be added to the basic system are:

  • Smoke detectors
  • Glass break detectors
  • Panic buttons
  • Pressure mats for under rugs
  • Closed circuit TV to allow monitoring and/or recording inside or outside a home.
  • Alarm screens for windows.

Costs

Costs of systems vary. Many security companies offer the systems for free - in exchange for long-term monitoring contracts.

Monitored System or Unmonitored System?

Monitored systems typically work as follows:

  1. The security system senses something.
  2. The security system waits 30 to 45 seconds to give the homeowner a chance to deactivate the system to prevent false alarms.
  3. If the alarm is not deactivated the security system sends a message to the monitoring company over telephone lines.
  4. The monitoring company receives the message and verifies the alarm, generally by placing a phone call to the home. If they do not receive the proper password or do not receive an answer, they call the police.
  5. The police respond.

Unmonitored systems typically have on-site alarms and/or flashing lights. It relies on neighbors to call police.

Neighbors or passersby should never investigate an alarm themselves.

With an unmonitored system, it is best to have a combination of strobe lights and alarms. They should be located on the street side of the house and in an inaccessible spot as possible. It is best to discuss the installation with your neighbors and to place the siren and flashing light on the house where it can be easily seen.

What is DVR?


Recording is essential to the effectiveness of any video security system. Without recording, you need to have an employee watching a monitor at all times – hardly a cost-effective solution. And even if you spot suspicious activity, without a recording, you have nothing to use in court.

DVRs offer so many advantages over VCRs that they have rapidly taken over as the CCTV recording solution of choice:

  • Ease of locating events- Instead of fast-forwarding through hours of tape, DVRs can instantly retrieve images from any specific time or date, or automatically skip to the point on a recording when something changed.
  • Storage quality- Like all tapes, video cassettes start deteriorating almost immediately once you record on them – and the problem gets worse every time you reuse them. DVR recordings have no degradation at all since they are stored onto a hard drive.
  • Multitasking- While analog VCRs can either record or play, most DVRs can do both at the same time, letting you review images while still recording.
  • Smart monitoring- The DVR can be set to take one picture per second or less – just enough to create a running record. However when it detects motion, it can automatically bump the recording speed up to full (30 frames per second), getting every detail of the unauthorized activity.

For businesses that do not want to constantly change tapes, DVRs are definitely the way to go. While security VCRs usually offer a time-lapse mode that lets them record for long periods of time, the resulting images are not a good record of events – they record only one snapshot every eight seconds. To get higher quality, you need to change tapes every day or more often. DVRs, on the other hand, can record for weeks or even months.

What is camera?


The basic technology behind most surveillance cameras is the Charge Coupled Device (CCD). CCDs convert the images that come through the camera’s lens into electronic impulses. CCDs provide a good combination of low price and quality picture for security applications.

Camera formats are measured in inches: most surveillance cameras fall between 1/4" and 1”. This refers to the usable image size created inside the camera. For most security use, a small size is fine – 1/4" or 1/3” cameras dominate CCTV sales. Larger formats do not necessarily result in better images, but can be advantageous in dimly lit situations since they are able to gather more light.

Many newer surveillance cameras use digital signal processing (DSP) to convert the analog video stream to digital information, improving picture quality and to adding functionality. The DSP circuit in a camera can have a very large effect on the quality of the images.

What cctv use for?

A good video surveillance system can make your business safer, more efficient, and less prone to theft and accidents. Specifically, video surveillance can provide many benefits:
  • reduce shrinkage by catching shoplifters
  • deter potential thieves
  • monitor cash registers
  • record evidence to prevent bogus accident claims
  • identify visitors and employees
  • monitor hazardous work areas
  • increase security in and around business premises and parking lots
  • meet insurance requirements


Nice To Meet You All~

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ITG RESOURCES (ITG) is leading CCTV and security product Importer, Wholesalers and Distributors in Malaysia. ITG are CCTV distributor for Panasonic CCTV Product, Samsung CCTV Camera, Anyon CCTV Camera, Sony CCTV Camera, ADV CCTV Camera, Falcon CCTV, Avtech security product in whole Malaysia. ITG can consult our client in client situation using a suitable camera and point. ITG are also include, Digital Video Surveillance (DVR), Panasonic IP Camera, Telephone Recording system(PABX), Video Door Phone(Intercom), Day and Night camera(IR Camera), Door Access, Samsung Camera, Sony Camera, Panasonic, ADV, Alarm System, Network camera(IP camera) , CCD Camera , Dome camera, DVR system ,Standalone Digital Video Recorder, Speed Dome Camera , IR Camera, Lens , CCTV Monitor, Pan tilt motor , controller, Alarm System, Home with CMS, RG59 RG6 Coaxial Cable, Cat 5 Twisted Pair Solution, Nurse call system, Electronic Timer, Electronic Door Bell, Electronic Exit Switch. Our sales office based in Seremban Malaysia.