How does an anti frequency inhibitor alarm work?

Jamming is a problem that any wireless device suffers from. We explain how a frequency inhibitor works and by what means it can be avoided.

Index:

What is a frequency jammer?

The frequency inhibitors are electronic devices are used illegally to cancel communication between devices that communicate wirelessly.

A jammer is made up of a signal generating circuit and one antenna that transmits it on the same wave

Some thief gangs use alarm jammers to get in in homes and businesses protected with an alarm without the alarm going off. an inhibitor attacks the connection between the alarm and the CRA (Alarm Receiving Center). They also cancel communication between different devices of the alarm system

There are many different types of alarm inhibitors, from the cheapest and most basic ones that can be found online at electronic websites or second-hand pages for less than 100 euros, even the most sophisticated and professional ones that cannot be found on the market and that are restricted to certain official institutions.

There is also the possibility of making homemade inhibitors. These devices are usually quite simple and any electronic alarm system is protected against these practices.

The purchase, sale and use of a jammer is illegal in Europe. In Spain they can only be used by the Security Forces and Bodies and authorized Public Administrations.

How does a frequency jammer work?

To inhibit an alarm it is first necessary find out the frequency to which the signal is sent and program the inhibitor to cancel all signals that are emitted at that frequency, so they will need to have previously observed the property. Then follow this procedure:

1. The jammer overloads the communication channel with a much stronger signal than the alarm
2. This signal is transmitted on the same frequency wave, which makes the original transmitter and receiver unable to communicate with each other.
3. It is also common to resort to the generation of waves with noise so that the receiver does not detect the signal from the emitter

When an inhibitor is activated the alarm does not go off. Burglars can then move freely around the property without fear that the alarm will go off and alert the police.

The inhibitors are capable of acting with signals , , GPRS, GPS and Bluetooth. An alarm usually uses the first three signals.

To avoid inhibition with the greatest efficiency, it is necessary that when contracting an alarm you do not look only at its price. The they do not usually have anti-inhibition systemswhich makes them ineffective and unsafe alarms.

How do you avoid a jammer attack?

The wireless alarms are more susceptible to being inhibited than the wired ones. In general, the most effective ways to fight inhibition are the following:

• Have the CRA perform checks every few minutes to check that you can send and receive signals of the alarm system.
• That there is a continuous signal between the ARC and the alarm system so that the alert is activated as soon as the signal is lost.
• What exists more than one way of communication between the ARC and the alarm system, because, although all the signals can be inhibited, it is difficult to block them all at the same time.

Are wireless alarms infallible against inhibition? Wired devices are the most difficult alarms to inhibit, since communication between the alarm system and the ARC would only cease if wires are cut.

Next, we explain how they act when inhibited by the major alarm companies from Spain.

Tyco Anti Inhibitor System

Alarms (now known as ADT) fight against inhibition with a system of two-way communication with the CRA. On the one hand, a wireless signal (GPRS) and, on the other hand, a signal that is transmitted wired through router of the home or business.

the system is capable of detecting any type of interference that is occurring between the detectors and sensors of the alarm and the control panel.

The anti-inhibition systems are fundamental in the equipment of the .

Securitas Direct anti-inhibitor system

alarms differ from the rest by using your own Alarm Signal Transmission Network (ATN), achieved thanks to an agreement with Telefónica.

This network is from narrow bandwidthwhich means on the one hand that it is exclusive and privatebut on the other hand, it does not allow the CRA to view videos from inside the property, making it more difficult to confirm an alarm.

This private transmission network makes inhibiting your alarms more difficult but not impossible. Securitas Direct does not have two-way communication.

Prosegur anti-inhibitor system

The Prosegur alarm inhibition system is part of its method called triple securitywho also fights against sabotage (power outage) and before intrusion.

The Prosegur anti-inhibition system works by sending signals through double via. If the signal is blocked GPRSit automatically activates the IP signal. In this way, the alarm system can continue sending information to the CRA.

In addition, it offers for some businesses wired alarmswith which it achieves greater protection against frequency inhibitors.

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