|What is an alarm system?
- An alarm system is a group of
components to detect various conditions and alert you to abnormal or
undesired conditions based on the detection of changes and the type of
condition being monitored by the detection devices.
- Now that sounds all cerebral (over thought) but its probably the most accurate description.
example, laying a bunch of light dry brush and the ground all aorund
your camp in the woods or the desert might alert you to somebody
approaching your camp by the sound of the twigs breaking when somebody
st4eps on them That is probably one of the first alarm systems
ever developed. It work... most of the time.
|What does a modern alarm system do?
- The control
panel watches the condition of a number of circuits and then acts
on them based on its armed state, the type of condition, and the
current status of the alarm., Maybe even based on the time of day
or the condition of other devices or ciircuits.
- It can activate a siren or voice message system or even a voice siren.
- It can send messages to a central station. (Its most important feature)
- It can light warning lights.
- It can activate or deactive many types of devices.
|How do alarm systems communicate with the Alarm Central Station? (How are they monitored?)
- Most alarms are designed with a dialer to use a regular POTS (plane old telephone service) line.
- IP communicators can transmit alarm signals to the central station over the internet.
- Cellular communicators send signals using a part of the cellular network designed for data.
- Some types of radio systems may be available in some areas.
|What kind of devices can an alarm activate?
Basically anything that can be activated electrically. The most common things are.
Some other things that are sometimes controlled by alarms:
- A Central Station Communicator
- Strobe Light
- Voice warning system
- Gate or door lock or lock release.
- Door holders
- Garage door openers
- Video recording equipment
|What can an alarm system detect?
Well, almost anything that is
measureable to some degree. However for practical reasons and to avoid
false alarms some things may be a little more difficult to detect than
others. Some of the conditions detecable are lised below.
- Water Level
- Flowing Water
- Infrarred Changes
- Microwave Echo
- Photo Beams
Open Doors & Windows
- Magnetic Contacts
- Proximity Sensors
- Shock Sensors
- Acoustic Sensors
- Sensor Loops
- Underground Vehicle probes,
- Detection Loops
- Photo Beams
|How do I control my alarm system?|
- The most common things are: Keypads, Remotes, Key Switches
- Some other ways are with: Card readers, Computers, oe even your Cell Phone