Sprint Magic Box TREBL Design Requirements Document page 11

The Sprint TREBL turns on automatically when the power supply unit is connected to the underside
of the unit.
1. Place the Sprint TREBL on a suitable windowsill and verify that the unit's rear side is positioned
against the glass as close to the glass as possible (as in the figure 1 below).
Shortly the following will be occurred while the unit is starting up.
2.
VGI Sound: Your Sprint TREBL is getting Activated
LED Pattern: Sprint TREBL LED shows 'Pulsing white light' pattern
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