With internal memory, VT900 can store GPS coordinates when there is no GPRS/WCDMA connection, or at a specified interval requested by the user. One optional feature of VT900 is that a RS232 port Can connect RFID card reader, magnetic card reader and other Accessories.
7.1 Charge For the first time using the VT900, please connect the DC (positive) and GND (ground) to the 12V or 24V power supply for at least 2 hours to ensure sufficient power. After configuration and testing, install it on the vehicle.
Page 7 of 14 place with metal shielding. 7.4 Turn on VT900 Long press the power button for 3-5 sec, or connect to the external power supply, VT900 will turn on. LED operation status: GPS(blue) Input is active Device Turn off or in sleeping mode GPS module is starting up or restarting Flashing(every 0.1 sec)...
7.7 Parameter Configuration Download and install USB cable driver PL2303_Prolific_Driver Connect VT900 to the computer via USB cable. Operating Parameter_Editor configuration software and open the port. Press the on/ off button for 1sec to make device enter Parameter Editor configuration state.
For example: Analog input connect with fuel sensor,Yellow-green wire of the sensor is connected to the blue wire of VT900. Output voltage of the sensor is 0V when the fuel tank is empty, Output voltage of the sensor is 5V when the fuel Tank is full.
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