GMT200 User Manual  
TRACGMT200UM001             -12 - 
There is one method to turn off GMT200. 
      -Remove the external power and USB power. 
   -Press the reset key. 
Note: 
  GMT200 PWR LED will be off. 
3.3. Reset Key 
There is a reset key behind the SIM card cover. If the power wire is connected to vehicle 
power, the system will reboot when the key is pressed; if the system is powered by the 
backup battery and the power wire is not be connected to vehicle power, the system will 
shutdown when the key is pressed. 
Note: 
When you finished the firmware upgrade, please press the reset key to reboot the system 
before configuring the terminal. 
3.4. USB connector 
There is a USB connector on GMT200 which is beside the SIM card holder. With the USB 
connector and the DATA_CABLE_M, user can configure the system or upgrade the 
firmware. When the DATA_CABLE_M is plugged in, the system will boot.   
3.5. Power Connection 
The red wire is power wire and the black wire is ground wire. The input voltage range for 
this device is from 9V to 32V. The device is designed to be installed in vehicles that 
operate on 12V or 24V systems without the need for external transformers. 
 
Figure 3. Typical Power Connection