Check the alarm.

If you buy a car with it already installed alarm systems, can we consider it secure? We offer you a few guidelines to consider when choosing such a vehicle.

· Find out how to change the code transmitter (remote control - RC) and emergency code disarm and be sure to change them.

· In addition, check with the former owner of the way emergency disarm in case of failure or loss of the transmitter, the method of transfer signaling mode service (Valet), how to lock-up and blocking the installation location and type of their relay blocking. If the possibility of obtaining this information in whole or in part is missing, it is advisable to get to the operating instructions of the system or to find out where it is installed. After that, check the alarm itself, putting it in a protection mode.


1. The range of the remote control. It should match the passport (as a rule, at least 5 meters). At short range, replace the power supply, or to see a specialist, check the transmitter frequency (433.92 MHz standard, old and certified systems from 305 to 315 MHz).

2. Reaction to opening doors, hood and trunk. Response to the sequential opening doors, hood and trunk must be long (30-60 seconds) the alarm. Intermittent beep, working off a warning alarm went zone shock sensor and contact sensor does not work. Arming with three or more "quack" or triggering system through 5-45 seconds after arming means that the chain of contact sensor is faulty.

3. Reaction to attack on the front rack and wheel. In a single-level shock sensor should be long (30-60 seconds) the alarm. In a two-level reaction to a weak strike (warning zone) is one or more warning "Kwak". Reaction to slog similar reaction sibling sensor. Keep in mind, rocking the car will not cause an alarm. Included in the set of sensors called "shock" is not from a lack of vocabulary.

4. Reaction to breaking glass (with glass break sensor). Strikes a coin on the glass car should cause a reaction similar to that described in the preceding paragraph.

5. Reaction to the penetration of the interior (if the alarm has ultrasonic or microwave sensors sibling). Moving inside the car should cause long alarm. In vehicles equipped with these sensors, interior decoration decorative unacceptable "tassels" as a deodorant, skeletons, dolls. Microwave sensor is normally mounted in the cabin near the handbrake. He can not stand on it to find the metal.

6. The response to movement in the security warning zone. Moving around in a protection mode staged car equipped with a two-stage microwave sensor must react siren. This single "quake" or series. Is detected only possible when you move!

7. Reaction to jacking (with encoder). After about 1 minute after arming sequential jacking the vehicle must be heard long alarm.

8. The response to unintended operation. An attempt to turn the ignition key in the lock of the car, delivered in a protection mode, should trigger the siren (cycle 20-60 seconds). The motor must not be got.

9. Performance testing of the siren. In the "alert" siren must work full cycle without podhripyvany and failures. Emergency shutdown mode the analog terminal of the battery must provide loss of sound when the ignition key at an angle of 90 °.

10. Checking light signaling. Fact of disarming must be confirmed by light signals. Alarm - light signals together with signals of siren.

11. Current drawn by the alarm system. Tester should measure current consumption of the car with the alarm introduced in arming and disarming. Metering is the instrument, probes which are installed in the open circuit regular car battery and removed again terminals. Here we should pay attention to the following points.

First, the difference between two metering is the current consumption of the alarm armed, and its value does not exceed 50 mA.

Second, when disarmed alarm electrical system should not consume more than 100 mA. Otherwise, refer to the auto electrician to find the source of battery discharge.

Third, if the two measured values ​​are not critical, but the battery runs out quickly, it is necessary to check its condition.

Fourth, do the self-manipulation is difficult, seek help from a electrician.

What should pay attention

1. You have decided to put on a car security system and start to view the newspaper with offers such products. To begin, note how often glimpsed advertising, any brand. Reputable firms generally do not spare money on advertising support, including booklets, stickers, T-shirts, posters, etc.

2. Another factor: the longer the brand holds in the market, the more likely it is really robust system that is in demand and meet the expectations of customers. The market is saturated enough car alarms, and stay "afloat" may be the only one who has an interesting and quality products.

3. When buying alarm is better to give preference to the latest models of luxury brands. Reputable firms typically at least once a year updating its product range. The hijackers are not asleep, so the company manufacturers are constantly developing and the market receives all new alarms. When choosing a new system known company whose products worked well, you increase the degree of protection of the car.

4. One of these new products - the control of remote controls. Western firms producers consider it an essential part of any security system. For example, you fit in a car workshop. Your charm is in the hands of others - no matter for how long. Even a few minutes is enough to connect one more stick. What's next - goes without saying. Your machine has a chance to be stolen. Signaling to control the number of remote controls will let you know immediately LED blinking or turning on the siren that appeared "unauthorized" trinket.

5. The latest models have a so-called "bouncing" (changing) code. This means that each time the remote control code is changed as a result it can not be intercepted and read by a scanner. The presence of this feature is to some extent an indicator of class system.

6. Immobilizer we have somehow neglected, although its use in signaling significantly increases the complexity of the system. Everyone knows that it immobilizes the car. Thus there is another, independent protection. Usually it costs two to three times less than the alarm, as well as a pager, which too often overlooked. However, a simple alarm system in conjunction with these two elements provides comprehensive protection. Pager beeps owner, not least when he is away from the machine and it is not visible.

7. The same applies to the autonomous siren. If the thief might try to neutralize the alarm over a relatively short period of time, open the hood and dropping battery terminal or cut the wires in the cabin, the self-powered siren with him so quickly "to calm down" can not be, especially if it is installed in an inaccessible place.

8. Directly by purchasing pay attention to the quality of execution. With some experience, you can immediately distinguish branded products. For example, a hallmark of cheap Chinese alarm - bright colored pendant. Keychain good system is usually black or gray. Taking it in his hands, you will immediately see the excellent work of the designer and accuracy of performance.

9. And the last point - the quality and accuracy of installation. Any alarm can ruin a botched installation. Remember that you can not put a good alarm for 2-3 hours. In solid firms generally work, qualified electronics engineers with good equipment. So do not save money on the installation, the more the difference is not so great, and you can lose a lot more.