You can increase the level of warming or cooling on your Embr Wave by clicking the right side (for warming) or the left side (for cooling) multiple times, or you can simply press and hold the right side or the left side.
Once the light bar is filled all the way up (i.e. it is no longer just partially lit), that means you've reached the maximum level of warming or cooling and the device will flash twice to indicate that you can't increase the level of warming or cooling any further.
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