| Disaster and security alarms are not new to many | | | | differ depending on the design and prerogative of the |
| people. These equipments are already available and | | | | manufacturer. Detector zones can also be |
| are being continuously innovated. | | | | programmed in control panel so that when the |
| These warning instruments are found usually in | | | | detector gets unusual frequencies, the brain accesses |
| business firms. The reason for installing these devices | | | | it and make the alarm sound. The control panel also |
| is for safety of properties against disasters like fire | | | | has a memory chip which can store the user settings. |
| and attempted burglary | | | | It'll be present in the product's brochure or in the user's |
| Jewellery shops and Banks are examples where high | | | | manual. |
| security is needed. By using these alarms security is | | | | Signaling Devices |
| obtained. In fact, their insurance companies force them | | | | These alarms make sounds whenever there is need. It |
| to have the complex and the most effective burglar | | | | may use a bell, a chime or a buzzer. The alarm that is |
| alarm that the firm could have. For higher security the | | | | used is loud enough such that it can cause panic. |
| burglar alarm used must be more complex. | | | | Now-a-days, sounders are partnered with strobe |
| Burglar alarms which are installed in houses uses the | | | | which is a special lighting device. This consists of a |
| alarm system's principle. Alarms can make sound | | | | lamp that is mounted such that it rotates when the |
| when condition is met with, due to electrical flow. For | | | | alarm sounds. Most common colours which are used |
| instance, for close circuit alarm, while the doors open, | | | | for strobes are yellow, red and blue. Telephone relays |
| the flow of current activates the alarm in contrary to | | | | or Speech diallers may also be part of this equipment. |
| open circuit alarms which alarm when current is cut. | | | | Detectors |
| There are three main equipments in a burglar alarm. | | | | They are also known as sensors. These are used for |
| These are I) the control panel, ii) signaling device and iii) | | | | reporting movements that are unusual to control panel. |
| detectors. These are interconnected to work as | | | | These are of several types. Some commonly used |
| needed. There are other systems which uses infrared, | | | | detectors are: |
| radio frequency etc such that it connects one part | | | | - Magnetic Contact Detectors - it is usually mounted in |
| with another. Those systems which use radio | | | | doors and windows. These are mounted at the edge |
| receivers and transmitters are called the wireless | | | | of windows and doors. |
| systems. | | | | - Infrared Detectors (passive) - these are used to |
| Control Panel | | | | detect unusual irregularities or motions in the place. |
| It is the main processing unit of the system. That is | | | | These can detect smoke and temperature changes. |
| where one can program the system such that it | | | | - Vibration sensors - these are more sensitive than |
| works according to the particular specifications of the | | | | magnetic contact detectors since a small vibration |
| building or home. You can reset, turn on or turn off the | | | | from door or window could be interpreted by it as |
| alarm system there. Control panel is accessed using | | | | unusual and trigger the control panel to alarm. |
| keypad remotes. Specifications of control panel might | | | | |