The early days of the automobile anti-theft equipment is mainly mechanical anti-theft lock, and it is mainly by locking clutch, brake, throttle or steering wheel, gear position to achieve the purpose of anti-theft, but only burglar alarm. Now there are many existing forms, such as the transmission file locks, steering wheel locks, brake pedal lock, clutch pedal lock and so on. The advantage is cheap, easy to install, and will be able to get a few hundred dollars, or even tens of dollars. The disadvantage is the large size, the need to carry a key, the burglar is not complete each disassembly, too much trouble to have to find a place to place when not using. After several technical upgrades, the mechanical car alarm now has the existing steering wheel lock and gear lock. Sometimes the owners give vehicles fitted on several mechanical anti-theft devices. According to the car alarm manufacturer, by doing so, it may be to some extent the deter car thieves, increasing the time thieves implementation of theft, to increase the finding possibility of car theft behavior.
Electronic Alarm System
The electronic alarm system is a more popular anti-theft device in the automotive market, and it is the key and main research and development direction for the alarm system manufacturer in this field. This kind of car alarms are various in variety; most cars at home and abroad in the configured key chip factory anti-theft system. It uses the radio transmitter chip in the key to start the car engine to the car's ECU communication. And the sound and light alarm system, car dashboards equipped with a light-emitting diode, allows owners to know the working status of the system, can also act as a deterrent to pry into the cabin of the car thieves. When the car vibrates due to external forces, or doors, trunk lid the former machine hatch was forced open, the alarm sound, in order to deter car thieves. More two-way alarm system, more than the flash and audible alarm system notifies owners of a function, in the vicinity of the vehicle owners through portable LCD key to know the state of the car when the car was outside intrusion.
Biometric Car Alarm System
The biometric car alarm system is the only one car alarm that uses the characteristics of the human body as the only key to unlock and lock the car engine. Use the specific products automotive fingerprint to start the controller and vein scan controller. The use of large amount of information carried by the human fingerprint, and the coincidence rate is almost zero in each of the person's fingerprint characteristics owners fingerprint information is stored in advance in the system, by the ratio of the fingerprint verification of identity in order to start the car, even if the thieves stole car keys all helpless, high security. The drawback is a higher price, and before you start the car one more than the fingerprint action takes 2 seconds.
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