EA opens market orders by Bollinger Bands indicator. Market Buy order opened if the price crossed Upper Band. Market Sell order opened if the price crossed Lower Band. Orders closed by Bollinger Middle, StopLoss, TakeProfit or opposite signal.
MT5 Locking Latency Arbitrage Software opens two opposite (buy and sell) orders on two different MT5 accounts for each trading symbol.
It can be two different MT5 brokers or two different accounts with the same MT5 broker. When arbitrage situation appear, software closes opened order on symbol, applies trailing stop for corresponding virtual order, and opens new locking order on the other side when S/L or T/P is hit.