The author of the idea: Collector, the author of the MQL5 code: barabashkakvn.

The rules of the trading system are as follows:

• A signal to open BUY: SAR on bar 1 is less than the Close of bar 0, SAR on bar 1 is less than SAR on bar 0, RSI on bar 0 is greater than 50.0;
• A signal to open SELL: SAR on bar 1 is greater than the Close of bar 0, SAR on bar 1 is greater than SAR on bar 0, RSI on bar 0 is less than 50.0;

Lot is calculated automatically based on the risk value as a percentage of free margin.

Condition to open a Sell position:

Input Parameters

• Stop Loss (in pips) - Stop Loss value;
• Take Profit (in pips) - Take Profit value;
• Trailing Stop (in pips) - trailing value;
• Trailing Step (in pips) - trailing step value;
• Risk in percent for a deal from a free margin - risk per trade as percentage of free margin.
• Magic Number - unique identifier of the EA;
• SAR: price increment step - acceleration factor - SAR indicator parameter;
• SAR: maximum value of step - SAR indicator parameter;
• RSI: averaging period - RSI indicator parameter;
• RSI: type of price - RSI indicator parameter.

Example for SAR RSI MTS 2017.06.08 - 2017.10.26 GBPUSD,M30: