4. Device Operation (Continued)
4.3 Power
To turn the device "ON", press and hold the power button until you see status LED ! blink 2 twice.
To turn the device "OFF", press and hold the power button until you see status LED ! blink 1
once.
4.4 Emergency button
Press and hold the emergency button until you see status LED ! blink 3 times. TR-151 will
attempt to receive a GPS fix, then, communicate the emergency SMS to the preset phone
number.
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