The alarm systems are usually composed of a central unit, a keyboard, acoustic and / or optical warning devices and finally a certain number of detectors depending on the dwelling. These detectors are usually volumetric (detect intrusion within a volume or room), infrared technology being the most used for its reliability and economy. This technology bases its operation on the change or decompensation of temperature between its beams. Therefore, what they really detect is human heat and not movement as is usual belief. Other more sophisticated volumetric detectors are dual technology, combining infrared detection with the microwave, both of which must be produced simultaneously to cause alarm. This characteristic confers a greater hardness of detection in risky environments, so normally they have been installed in these environments (garages, banks, offices). Although dual-technology detectors have been installed indiscriminately in any type of installation, they are currently at a disadvantage compared to infrared technology, due to the high difficulty of adjusting and installing microwave detectors, and that they base their detection on the movement, not distinguishing whether it is produced by a movement of curtains or by a drain of water in their field of detection.
Other types of detectors to install in our alarm system may be perimeter action such as magnetic contacts for door or window, inertial detection of glass breakage, detection by infrared barrier or outdoor microwave and buried cable or fence. All these types of detection are analyzed in the perimeter protection section where you can get detailed information on the operation, advantages and disadvantages of these systems. You can also obtain technical documentation of all the equipment mentioned.
VOLUMETRIC DETECTORS - Radio Vs. Cable
The detectors must be installed so that they cover the access areas and strategic areas of your home. The link between the detectors and the central of your home, can be wired or radio. Galaktika recommends you, whenever possible, to install wired equipment, as it will provide you with the following advantages:
Lower installation cost
Radio equipment is somewhat more expensive than wiring.
Lower maintenance cost
Saving the change of lithium batteries every 2-3 years.
Once installed the wired equipment we "can forget" them, while the radio route have the disadvantage that from time to time we have to change the battery.
In general the operation of the wired equipment is more stable and reliable. Radio routes at certain places or times may cause false alarms due to interference.
Radio equipment is easier to breach and sabotage.
In general there is always much more product range to choose between the wiring and the radio (usually only one model).
If in a few years you want to change or update your alarm system, if you have installed radio technology, you must remove your entire security system. Where important technological advances really occur is in the control unit, and this is the element that can be updated more frequently, and if you used wired technology the detectors will always "value" you (they have an estimated life span of 10-14 years).