Friday 4 December 2015

HOME security burglar ALARM SYSTEM - 6 THINGS YOU SHOULD KNOW BY NOW

Security industry mainly includes alarm monitoring, video surveillance, access control, video intercom etc sectors. Undoubtedly, video surveillance contributes more than 70% market share. Nowadays, it becomes the fast growing business in global security market, video surveillance is evolving from analog standard definition to digital high definition. 

Network alarm system is far too flawed to be Reliable

WiFi or Internet connectivity technology can allow security system to transmit alarm signals through your home Internet connection. Unfortunately, the current technology is far too flawed to be reliable.  Alarm connection is crucial important for home security system. Once an alarm occurs, the system should instantly send alarm signals to alarm monitoring centre or key holders. Currently, there are three main technologies have been used in alarm communication, they are telephone line, GSM/3G/4G cellular, Internet. 
Each methods has pros and cons:
  • Telephone line: wired connection, vulnerable to be cut by a smart intruder, not portable, connection speed is slow
  • GSM/3G/4G cellular: wireless connection, portable, connection speed is medium
  • Internet / Network: wired connection, likely to fail when electricity/network outage and router stops working, or IP address has been changed, connection speed is fast.



What's difference between magnetic contact and PIR motion sensor?

A  home security system will include one alarm control panel and some security sensors. Users can choose diversity security sensors that used to detect different events. Magnetic contact, has many different names such as Door/Window sensor, reed switch, entry-point sensors etc. Magnetic contact is suitable for all open/close cabinet objects including doors, windows, drawers, wardrobes, safety deposit boxes, gun boxes etc. Magnetic contacts are inexpensive, very reliable, and in most cases out of sight. Magnetic contacts are inexpensive, very reliable, and in most cases out of sight. They are suitable for perimeter protection as the first line of defense in the burglar alarm system. While PIR motion sensor is widely used in interior motion detection. It adopts passive infra-red detection theory to sense moving objects. PIR motion sensors can protect a large space area. While PIR's and other interior detectors are an excellent back up, it is the contact that immediately triggers the alarm system when the door or window is open. Contacts should be used on all entry sights because a PIR will pick up the intruder after they are inside.

DOOR SENSOR


SMOKE SENSOR

PIR SENSOR
















 

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