The One EA — EURUSD/GBPUSD Scalper with Fixed SL/TP Grid Control

The One EA is a MetaTrader 4 expert advisor that trades eight currency pairs on the H1 timeframe, entering positions through Bollinger Band and Envelope indicator signals with fixed 20-pip stop loss and 80-pip take profit targets.

Source code parameters confirm a 4:1 reward-to-risk ratio per trade with volatility-filtered entry logic and ECN-mode execution built in.

What The One EA Does Differently

• ✅ Reward Ratio: Fixed 80-pip TP against 20-pip SL gives a 4:1 structure per trade — meaning three losing trades require one winner to recover, but a fast trending move against you hits the stop before TP is reached.
• ✅ Volatility Filter: Dynamic volatility limiter (multiplier 125×, limit 180) gates entries during abnormal expansion — reduces false signals in news-driven spikes, but may skip valid breakouts in fast markets.
• ✅ Eight-Pair Coverage: Runs EURUSD, GBPUSD, GBPCAD, EURCAD, CADCHF, AUDNZD, and GBPCHF simultaneously — diversifies signal frequency, but correlated GBP pairs can stack losses in a single USD/GBP trend move.
• ✅ Spread Protection: MaxSpread cap of 30 points blocks execution during illiquid conditions — keeps fill quality consistent, but will leave trades unplaced during high-spread news windows. Compare EA strategies

The One EA Performance

Performance data for The One EA is sourced from source code parameter analysis. No live Myfxbook signal or independently verified backtest report was provided for this product.

The source code confirms default configuration: 0.01 lot base size, risk-based lot scaling active (mm: true), lot range 0.1–10.0, StopLoss 20 pips, TakeProfit 80 pips. These are parameter declarations — not a performance record.

The primary structural risk in this strategy is correlated pair exposure. EURCAD, GBPCAD, GBPUSD, and GBPCHF all carry significant GBP or CAD component — during a sustained single-currency trend, multiple positions can open simultaneously and reach their 20-pip stop loss within the same session.

This weakness is partially controllable: reducing active pairs to GBP-only or CAD-only at any one time limits correlation stacking. The mm (money management) lot scaling amplifies this risk proportionally as account equity grows — setting LoTo at minimum (0.1) and disabling mm on smaller accounts reduces compounding exposure.

No backtest report, live account equity curve, or verified trade history was provided. Drawdown classification and post-mitigation return figures require a minimum 90-day demo run before any live deployment.

Available data covers source code parameters only — no trade history exists to confirm real-money drawdown, win rate, or profit factor under live conditions.

How The One EA Works

Mechanism: The EA targets mean-reversion and trend-continuation setups on eight major and cross pairs at the H1 timeframe. It combines Bollinger Bands (deviation 1.5) and Envelopes (deviation 0.07) to identify price excursions beyond statistically expected ranges, entering when both indicators align — a condition that historically resolves back toward equilibrium within the 80-pip TP target.

Signal Trigger: Both the Bollinger Band and Envelope indicator must confirm simultaneously (UseIndicatorSet: 134, Switch: 3). A dynamic volatility check gates the signal — if current volatility exceeds the 180-point limit scaled by the 125× multiplier, the entry is suppressed regardless of indicator alignment.

Position Close: Each trade carries a hard 80-pip take profit and 20-pip stop loss. A trailing start parameter (1.0) activates once the trade moves into profit. Orders expire after 3,600 seconds if not triggered, preventing stale pending orders from filling in changed conditions.

Exposure Limits: MaxSpread at 30 points blocks fills during illiquid conditions. ECN mode is enabled by default, routing orders with minimal requote exposure. Lot scaling is bounded between 0.1 and 10.0 regardless of account growth — the LotM ceiling prevents runaway position sizing.

✅ Optimal conditions: Ranging H1 sessions with predictable volatility (London/New York overlap); pairs returning to mean after a single-direction push; spread consistently below 20 points.

⚠️ Avoid when: Multiple GBP or CAD pairs are trending in the same direction simultaneously (correlated stop-out risk); high-impact news events widen spreads above 30 points and suppress all entries for that session window.

This EA requires MT4. Need MT5 platform support? Browse MT5 EAs

Recommended Settings

Who Should Use The One EA

• ✅ Running MT4 on a VPS with continuous uptime — H1 signal checks require the terminal to be live at every candle close across all eight pairs.
• ✅ Trading an ECN account with typical EURUSD spread below 15 points — the 30-point MaxSpread filter will block entries on standard fixed-spread accounts during active sessions.
• ✅ Prepared to run a 90-day demo before going live — no verified trade history exists; demo testing is the only way to establish real drawdown figures for your broker and account size.
• ✅ Comfortable managing correlated pair risk — running all eight pairs simultaneously exposes the account to stacked GBP and CAD positions; you need a plan for which pairs to disable during single-currency trend events.

Performance verified with: Source code parameters only — no live account or backtest report on file. Configuration basis: MT4, ECN, default inputs as documented in source.

Product Download Package Includes

• ✅ Experts:
  • The One EA (.mq4 – source code)
• ✅ Setfiles:
  • H1 configuration.set

The download link will be sent to your email immediately after purchase, along with a video tutorial on how to install it.

Frequently Asked Questions