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< Contents | APPENDIX A: Indicator Lights

APPENDIX A
Indicator Lights

Device on Skin

Device State Indicator Light Status Explanation

Standby No lights illuminated Device in standby, no therapy or
calibration in progress
Calibration Waterfall White (lights running back Calibration in progress
and forth)
Therapy Single Blinking White Light Therapy session in progress
Lights running one direction or the other Intensity increase or decrease as a result
of button press or adjustment via app.
Stimulation halted Orange light blinks for 2 minutes Therapy or Calibration has halted due
earlier than expected to an error condition; see Appendix B for
possible causes.

Device off Skin

Device State Indicator Light Status Explanation
Battery Check Single blink of 1 white light Adequate charge for one therapy session
Single blink of 2, 3, or 4 white lights The number of illuminated white lights
correspond to the level of battery
charge. The higher the number, the closer
it is to being fully charged.
Single blink of 5 white lights Fully Charged Battery
Single blink of orange light Battery needs to be charged.
Therapy Dose 1 white light or 5 lights illuminate while With a 10 second press off-skin, 5
button is held white lights indicate Regular therapy
dose is selected (60 min on, 60 min off,
automatically). 1 white light indicates
Manual dosage; 60 min on and then user
has to restart. Regular is the default
setting.

Quell User Manual Quell Customer Care 1-800-204-6577 or +1-781-890-9989
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