This day trading setup uses the MACD indicator to identify the trend and the Bollinger Bands as a trade trigger. The MACD parameters are 26 for the fast moving average, 12 for the slow moving average, and 9 for the signal line. These are the standard settings in most chart packages.
The Bollinger Bands settings are 12 for the moving average and 2 standard deviations for the bands."
http://www.tradingsetupsreview.com/simple-day-trading-strategy-bollinger-macd/
If some one interested, Please Google it and learn.