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The vehicle device is to establish to create disabling or tampering hard. Elimination of the vehicle battery or cellular phone phone does not interrupt security alarm info tranny to the checking train station. Two individual cellular antennas are utilized, to ensure that removal of 1 antenna will 55 also not interrupt the monitoring program. The use of two antennas also allows the machine to monitor input through each antennas and to select only the aerial that is presently receiving the best sign for use in emergency or security alarm information transmitted to the checking sixty train station. This particular 2-antenna agreement guarantees omnidirectional features or equivalent awareness associated with 360° in multi-direction detection associated with signal strength with out degradation. Concealing antennas inside the vehicle usually tends to decay the omni-directivity characteris- 65 tics from the mobile antenna. Nevertheless, by using two antennas and choosing the right signal between the antennas, omni-directional signal detection characteristics
could be taken care of. The automobile unit is set up to attract just low current when the vehicle key is actually off and also the car battery isn't becoming charged up again.