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Frequently, false alarms occur because car alarm owners use high sensitivity settings. This may be the main reason why loud bass frequency sound (loud music, other cars or motorcycles with loud exhaust systems, thunderstorms, etc.) can set off car alarms. The second possible reason is that some parts of the alarm system may be improperly installed.
The electric immobiliser/alarm system was invented by St. George Evans and Edward Birkenbuel and patented in 1919. [2] They developed a 3x3 grid of double-contact switches on a panel mounted inside the car so when the ignition switch was activated, current from the battery (or magneto) went to the spark plugs allowing the engine to start, or immobilizing the vehicle and sounding the horn. [3]
This category is for vehicle security systems and associated technologies. Pages in category "Vehicle security systems" The following 21 pages are in this category, out of 21 total.
3. Extra Credit Cards. You might not even remember that you hurriedly tossed one of your extra credit cards into the glove box while out on errands, but therein lies your crucial mistake.
Life Alert's alarm monitor phone device offering includes an answering machine unit with a emergency call button, a call cancel button, an on off switch and a wall plug in, connected to a telephone line and a pendant-shaped device, typically worn on a necklace or a wristband.
A transponder system is a system which is always armed until a device, usually a small RFID transponder, enters the vehicle's transmitter radius. Since the device is carried by the driver, usually in their wallet or pocket, if the driver leaves the immediate vicinity of the vehicle, so will the transponder, causing the system to assume the vehicle has been hijacked and disable it.