What is the yellow button for?
Most tracking devices offer no comprehensive visual feedback to the user so it is very difficult to assess a problem or check the availability of a service. The yellow button is a test status button, and will light the three LED indicator lights just above the button when pressed. These lights represent the battery level, GPS signal strength and GSM signal strength. This allows the user to asses the performance of the device locally – if all the lights are green then the signal strength is good and locked on; amber is not so good, but possibly still functional, and red is a sign that there is no signal in the area or battery power is low.
