Forex EA Sigma - Version 4.0 EA Sigma 4.0 Metatrader Expert Advisor - Forex Trading Systems, Forex Expert Advisor and Forex Strategies. Automated forex systems also known as forex robots with high winrate and low draw downs for automated forex trading. All forex robots are tested with tickdata back to 1999 and since 2008 used for live trading. The Expert Advisor "EA Sigma" is a 100% automated Forex trading system what trades during the Asia session. The trade logic is based on customized technical indicators like relative strength index, average true range, Bollinger bands and custom indicators developed from our MQL programming team. The combination from high win rate and very low drawdown's makes the system to one of the best available for automated Forex trading. As all offered Forex robots this Forex Expert Advisor is tested with historical data back to 1999 and since June 2008 used for live trading. The actual version of this Forex robot is auto adaptive which means the system adjust itself according to the actual market