The indicator is based on the simple CCI.
When its value crosses 100 from above, it sends a signal to sell.
When its value crosses -100 from below, it sends a signal to buy.
Everything is simple.
It gives a good signals, of course there are some wrong, you can add some filter to filter them.
Also you can open order for the each signal, with SL at 2-3 points higher/lower of the maximal/minimal price of the 2-3 previous candlesticks.