How Do Alarm Systems work?

Home Security

As a homeowner, installing an alarm system for your home is one of the best decisions you might make. However, people have somehow developed an incoherent opinion when it comes to alarm systems, ignoring the massive benefits they offer. Nonetheless, when you are well aware of their functioning and operation, you will surely consider setting one. In this article, we will explain how alarm systems work in addition to their benefits.

To understand how these systems operate, we will split the topic into 3 different parts:

1- Alarm System control panel

The control panel is the brain of the system. This panel responds to the sensors in general and passive infrared sensors. In case a sensor is tripped, it transmits a signal to the brain of the system, which selects the suitable response and acts accordingly. This action is based on a set of directions already established. You can also alter other rules in a way that suits your necessities.

If you usually sleep upstairs, the control panel will arm, including the sensors distributed all over the premises. However, if you are not home, the brain of the system receives the signals of the sensors. Then, it warns you consequently of anything suspicious.

Furthermore, window breaks instantly trigger the alarm. But if you happen to open the door, the alarm system delays any alert. This gives you the necessary time to disarm the panel.

You can connect the control panel to your mobile phone, and have complete control over the system no matter where you are. Most trademarks vary, especially in this feature. As you can determine most of the advantages of the alarm system, by selecting a proper control panel.

For instance, deciding whether to go for bosch 3000 or bosch 6000 can be hard. However, what differs them actually is the capability of each one of them to handle and manage more sensors and more directives. 

2- Alarm Systems sensors

The sensors’ role is to send the main information to the control panel. These sensors vary in usages and forms. Some sensors have the ability to detect movement, some others detect windows ruptures or door opening.

Here is the list of most of these sensors: 

a. Alarm Systems Motion sensors:

Passive Infrared sensors (PIRs), are sensors that calculate the infrared waves’ transmission cast by objects in the area. These PIRs detect movement in general but are unable to discern the type of an object. Once they notice an object, the sensors send a signal to the brain of the system, which activates a warning. Most of the home security alarm systems include more or less 3 passive infrared sensors.

b. Alarm Systems Pet-Friendly PIRs:

As mentioned above, passive infrared sensors or PIRs calculate the infrared waves’ transmission cast by objects in the area to notice burglars. But what if you own any pet at home? Would this fact set off the alarm?

The Pet-Friendly PIR is the smartest sensor in the market since its original design includes pets in its operation. This PIR dismisses any passive infrared movement at floor level and any object that weighs up to 35 kg. Cats or dogs with a weight less than 35 kg do not trigger the Pet-Friendly PIR.

Another smart way is to employ a passive infrared sensor camera that takes pictures each time there is movement. That way, we receive images of the movements in action. However, if your pet is the one moving, you can instantly disarm the alarm system right from your mobile phone.

c. Alarm Systems Reed switch:

The users install these controls on the entrance door and windows. The reed switch directly transmits a signal on any door opening or window breaks.

d. Shock sensors:

These sensors detect the vibrations that accompany any harm or breaking of walls. 

e. Carbon monoxide:

Other sensors are developed to detect environmental and dangerous conditions like: 

If there is any carbon monoxide, an odorless and noxious gas, in the air, this gas triggers the alarm systems, alerting everyone on the premises to evacuate.

f. Environmental sensors:

Detect sudden changes in temperature caused by fire or the presence of water.

g. Smoke detector:

Detect sudden modifications in temperature generated by fire or the presence of water.

3-  A high-decibel siren or alarm:

This siren is so loud that thieves and burglars will escape right away. This alarm alerts as well the people of the house of the problem and is noisy enough to alert neighbors to hear it and react to the crisis.

These features so far are a nice start to differentiate between alarm systems, but you should be aware that there is more to it:

A- Alarm signs

Alarm signs are considered to be a powerful preventative tool. Of course, burglars won’t be excited to enter a premise that clearly announces having a triggered alarm system. Many intruders change their plans when they know that. The University of North Carolina – Charlotte led a survey that included 400 convicted delinquents. The study revealed that “approximately 83 % of people declared that they check whether there is an alarm system installed in the area where he intends to commit a burglary”.

B- Wireless vs wired sensors

As mentioned above, sensors vary in type. We have wired and wireless sensors. The wired sensors are a better choice when it comes to durability and power supply features. The wired surveillance systems are more difficult to establish though and can be more costly. However, they need less maintenance.

In some premises, if the house is made of many floors, wireless sensors would be the best option as the wiring process will take time and will be very difficult. Wireless sensors are also a better option for big houses or properties like business buildings. Wireless sensors are deemed easier to establish but with two drawbacks: limited coverage between sensors and the fact that you have to constantly change batteries. 

C- Monitored Alarm System vs Unmonitored

Once the alarm system is activated, two reactions are possible. You can either send a signal to the monitoring center, which will act as it deems appropriate, or the system can just inform you and send a signal to the screamer. Monitoring alarm systems require additional expenses to the security center, a monthly fee. This type of alarm system is favored since you can’t always rely on your neighbors.

Nestor Security Alarm systems

Please check our packages for the latest recommendations on installing alarm systems. According to your needs, we can deliver a custom-made alarm system with all the needed sensors.

Fill in our quotation form and we will get back to you quickly to discuss your security requirements.


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