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and power level 9 will be set automatically. IF you want to
operate the middle zone’s boost function, the other two zones
can not use boost at the same time
5.2.2 When you active one zone to boost, you have to decrease the
power level of the other zone in the same group to “5 ” or
less first, Or the “P” or “9 ”will flash on the indicator of
boost zone,and level “ 9” will be set automatically .
5.3 In group b, you can use three zones at the same time if you don`t
active the boost, but the max power level collocation is 7-level, 7-level,
7-level.
