Mean Reversion Range EA Review Mean reversion range EA, or MRR EA is a powerful tool for traders looking to capitalize on the natural fluctuations of major and cross-currency pairs. This Mean Reversion Range EA, which works on a 15-minute timeframe, is specifically designed to trade on the GBPUSD, USDCAD, USDCAD demo, ยูโรUSD, and EURGBP