If you want to be alerted when separate from your device or belongings:
  1. Go to Settings/My profile
  2. Set the wireless tether range to “Low” first
  3. If the tag auto-alert is too sensitive, set the wireless tether range to “Mid”
  4. Tap Back button to validate the change. The wireless tether range will be between 50 cm to 3 meters

If you want to find you tag within the largest tether radius: 
  1. Go to Settings/My profile
  2. Set the wireless tether range to “Hi”
  3. Tap Back button to validate the change. The wireless tether range will be between 10 to 15 meters