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AMG Sicherheitstechnik GmbH Industriepark Straße A-9 39245 Gommern Telefon 039200-7797-0 Freecall 0800-2264264*
Fax 039200-7797-29 www.amg-sicherheitstechnik.de info@amg-sicherheitstechnik.de
Business hours are 8-17 clock, outside this time an answering machine is switched
*) free of charge from the German fixed network and all German mobile networks
Question: Why is a speed displayed even though the vehicle is not moving?
Answer: The GPS module of the CarPro-Tec® GPS receives different satellites. This
is changing constantly. Depending on the position of the satellite used in
relation to the GPS module, the speeds are derived from the previous and
the next position calculation. This can sometimes be 16 feet or less, from
this the system deduces that the GPS module/vehicle has moved and
shows i.e. 1.2 Miles / h, although the vehicle is stationary.
Question: Why are different heights displayed?
Answer: This also depends on the position of the satellites used for the
computation, it is sometimes 5 or more satellites, the altitude is more
accurately determined, it is only 3, then a height determination is much
more difficult. As the satellites are constantly changing, the GPS module
tries to show an average of the different calculations, and this value is
subject to normal fluctuations.
Question: Why are different battery levels transmitted?
Answer: CarPro-Tec® GPS has 2 small lithium rechargeable batteries that allow you
to increase the time between charging and monitoring, i.e. at night, is
bypassed.
The full charge will last for up to approximately 7 days, depending on
various factors.
When a request is made, power is removed from the battery, the worse the
radio connection for GPS and GSM, the more power is needed.
The battery level will be displayed correspondingly lower because the
remaining working time would be shorter for this consumption. If the
connections are good, less power is needed. The battery indicates a higher
charge level or remaining working time.
As a rule, the consumption is reduced again after the signals have been
sent, so that another battery indicator can be made at a different time. Add
to that the temperature, it is colder, so the batteries are sluggish and less
efficient than at room temperature. For smartphones, the battery indicator
is also constantly changing, as this would irritate the user but the ads are
"smoothed", the customer sees a slow sinking level, although this is not
the reality.
Question: Why does the CarPro-Tec® GPS send an alarm even though nobody has
opened the vehicle?
Answer: The system uses a highly sensitive sensor that detects even the smallest
fluctuations in air volume. Since each vehicle is different in size, the sensor
must be adjusted by means of rotary control so that it does not come to an
unwanted triggering.
If the sensitivity is too high, small variations in air pressure, i.e. caused by
wind blowing past the ventilation openings of the vehicle to trigger.
Therefore, the sensitivity should be adjusted so that only a jerky opening
of the doors leads to the triggering.
No thief can open a vehicle in slow motion. In addition, no thief expects
that opening the doors or slamming the windows triggers an alarm.
In order to trigger an alarm independently of the room volume sensor,
radio sensors for windows, doors and motion detectors are also available
for the CarPro-Tec® GPS (see AMG shop).
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