Bollinger band strategy

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First bollinger band is a 20 period 1 deviation band.The 2nd is a 20 period 2 deviation band.You have to look for a at least two candles inside of the BB-1.If the next candle close above BB-1 ,then enter above the top of that candle for a long trade.Conformation can be taken by looking at the RSI(7 period),so that it is above 50 level.For a sell trade after two or more candles inside the BB-1,then if the next candle closes below the BB-1,enter below the bottom of that candle.The RSI reading should be below 50 level then.This strategy works in all time frames.
In the picture the 1st one is a long trade and the 2nd a sell trade..

Bollinger band strategy