Asian Session Range

Asian Session Range is a free MT5 indicator that draws a box around each day's Asian session high and low on your price chart. It marks two kinds of event at the box edges: a sweep, where price pokes through an edge and closes back inside, and a confirmed breakout, where price stays outside. In the Lab's repaint test, 0 of 134 signals changed. It suits traders who plan the London morning around the night's range.

What it draws on your chart

The Asian session range is the high and low that price makes during the quiet hours before Europe opens. A push through one of those edges that quickly fails is often called a liquidity sweep. The indicator doesn't teach either idea. It measures them for you on closed bars.

On the main chart window (no subwindow) you get:

• Asian Range Box: a rectangle around the session high and low. It freezes when the session window ends.
• High/Low extensions: dashed lines at the box high and low and a dotted mid line. They run from the window end until the next Asian session starts, for 24 hours at most.
• Four arrows: Asian High Sweep, Asian Low Sweep, Breakout Up and Breakout Down.
• Tags: "Swept" or "Confirmed" next to each arrow. Later, "(hit)" or "(miss)" is added once closed bars decide the follow-through.
• Status panel: the box state, edge states and recent follow-through rates (explained in the next tab).

What the Lab measured and how

The Lab tested version 1.30 on MT5 build 6230 (tested 2026-10-09). The data was EURUSD M15 from 2026-07-09 to 2026-10-08, using Raw Trading Ltd real ticks. Every arrow was logged as it appeared and then checked again later. None of the 134 signals moved or disappeared, and the longest arrow delay was 0 bars. The box is built from closed bars only, so what you see live is what history shows.

For follow-through, the Lab checked whether price moved 1 ATR (Average True Range, the average bar size) in the arrow's direction before it moved 1 ATR against it. Across all signals the result was 43.3%, which is below a coin flip. Every signal reached one side or the other within 20 bars, so no trade was left undecided. The median time to the 1 ATR touch was 2 bars, which is 30 minutes on M15. On that test the tool fired about 10.2 times a week.

The chart below splits the result by arrow type:

What this means for you: Breakout Down is the only arrow that beat a coin flip, and only on 44 signals. Asian Low Sweep was the weakest. Each group holds just 26 to 44 signals from one pair, one timeframe and one quarter, so treat these as directions to check, not fixed odds.

Who it helps

It helps intraday traders who want the Asian high and low drawn the same way every day. It also helps if you need a rule-based answer to "was that a fake-out or a real break?" instead of judging it by eye.

Install it in one step: put the 121 KB file in your MT5 MQL5/Indicators folder, refresh the Navigator and drag the indicator onto a chart.

How a breach becomes a Sweep or a Confirmed breakout

The indicator only looks for events after the box is frozen. By default it starts at the box end; with TrackStartHour you can start later. A breach needs a closed bar to go beyond the edge by a buffer. The buffer is the larger of BreakoutBufferATRMult x ATR and BreachMinBoxFrac x box width. The next few closes then decide what the breach was:

The chart below shows what a session with both events looks like:

The misread to avoid: a breakout arrow is already late

A Confirmed breakout needs ConfirmWindowBars closes outside the box. With the default of 3, the move is up to 3 bars old by the time the arrow can exist. That isn't repaint. It's the price of confirmation. Before you enter, look at how far price has already run from the edge.

The second misread is about one edge with two tags. A Breakout can follow an earlier Sweep of the same edge. If you faded a High Sweep and a Breakout Up then prints, the sweep idea has failed. Treat it as your exit, not as a new signal to ignore.

Reading the Status panel

The panel shows:

• the last sweep or confirmed breakout
• the box state and the time left in the session
• the box high and low
• the box width compared with its recent average, shown as Narrow, Normal or Wide
• the state of the upper and lower edges
• the follow-through hit rate of recent events

The panel scores events differently from the Lab:

• A sweep counts as a hit if price reaches the box mid before it goes 0.5 ATR beyond the sweep extreme.
• A breakout counts as a hit if price runs 0.5 x box width beyond the edge before a close back across the box mid.

These are not the Lab's 1 ATR numbers, so don't compare the two directly. The panel tells you how this box behaved on your symbol recently. The Lab tells you how it behaved on EURUSD M15 in one test.

The inputs to change first

• AsianStartHour / AsianEndHour (default 0 and 8): these use your broker's server time, not your local time. Check this first. If the box doesn't cover the hours you mean, nothing else on the chart is reliable. An end time at or before the start time makes the window cross midnight.
• TrackStartHour (default -1, meaning from the box end): set it to the London open in server time if you only want London-session events. TrackStartMinute sets the minute.
• ConfirmWindowBars (default 3, range 1-20): a lower value gives faster arrows and more fake-outs labelled as breakouts. A higher value gives fewer and later breakouts and more sweeps.
• BreakoutBufferATRMult (default 0.1) and BreachMinBoxFrac (default 0.05, 0 = off): raise these to ignore 1-pip pokes through the edge. The box-width floor stops a tiny ATR from counting noise as a breach.
• NarrowThreshold / WideThreshold / StatsLookbackDays (0.7 / 1.4 / 20): these control the Narrow/Wide label and how many past boxes feed the panel's averages.
• MaxDaysShown (default 5, range 1-30): sets how many past boxes, with their lines and tags, stay on the chart.

Alerts

EnableAlertSweep and EnableAlertBreakout choose which events alert you. Both are on by default. Delivery options:

• a popup in MT5 (EnableAlertPopup, on by default)
• a push notification to the MT5 mobile app (EnableAlertPush, off by default)
• a sound (EnableAlertSound, off by default, playing SoundFile)

Decision rules

These are reasoning-based rules. The Lab has not tested them.

• Sweep: treat it as a fade back toward the dotted mid line, the same target the panel scores sweeps against. Drop the idea if a Confirmed tag appears on the same edge.
• Asian Low Sweep: don't take it on its own. It was the weakest arrow in the Lab test, so require another reason, such as a higher-timeframe level, before acting.
• Confirmed breakout: take it only if price hasn't already run far beyond the edge. Skip it when the panel shows the box as Wide, because the day's range may already be spent.