Protecting your vehicle from theft is of paramount importance to drivers who value their property. For its implementation, car alarms are used, including those equipped with feedback. When choosing it, it is necessary to proceed from the principle of operation, as well as a set of standard and additional functions.
How the feedback happens
With the help of the key fob, the driver not only receives messages about attempts to break into his car, but can also control the simplest functions aimed at its safety. These include remote blocking of the car engine and its wheels, door locking and some other options, for example, time indication.
Signaling mechanism with feedback
The standard set contains a sound notification of an intruder's intrusion - a siren, sensors sensitive to shocks, an attempt to pick a key and other movements of the hijacker, as well as a key fob that receives signals. The latter can be used not only for a key pendant, but also for a mobile phone. This type of notification has become possible thanks to the built-in GSM module. It was in this that the feedback function was fully developed. In this case, tracking the state of your car is not limited to a small range of communication with the key fob, it covers the entire space covered by the cellular operator. Using a mobile phone, you can find out the temperature of the engine in the car, start and stop it, receive SMS notifications about hacking attempts, that is, not only be always in touch with your car and receive information about changes in its state in time, but also respond to actions in time intruders.
Other selection options
Thus, car alarms with feedback differ from each other in the way they receive a signal and a set of functions. An important selection criterion is the communication coding algorithm. It can be a constant value (dynamic encryption) or a variable (dialogue). The second one is more expensive, but hijackers will not be able to "eavesdrop" and calculate such a code, since it is constantly changing. The third type is digital coding, available with a GSM module. This is the most reliable option, its price is significantly higher than the previous two. In addition, the built-in GSM-module allows in some cases to listen to everything that happens in the car and find out the intentions of the hijackers.
Many manufacturers include the ability to autostart the engine in the feedback car alarm. This is important in winter, when it is necessary to warm up the engine properly before a trip, and also to increase the temperature in the cabin for a comfortable trip.
