This script allows you to use 2 moving averages a slow and a fast MA (e.g. 200 & 50). You are able to define the length of both MA and you can change the moving average type: Simple Moving Average (SMA) or Exponential Moving Average (EMA). The script will plot a SELL signal if the slow MA crosses over the fast MA and it will plot a BUY signal if the slow MA crosses under the fast MA. You are also able to define alerts for the BUY & SELL signals.