Cross Line Phone Alert Indicator: A Level Watchman

Written by Dominic Walsh · Published 6 Aug 2026 · Last updated 9 Sep 2026

The cross line phone alert indicator predicts nothing. It is a monitoring utility. You put lines on the chart, it reads them on every tick, and when a closed bar crosses one it sends a single push to your phone. Six typed prices can stand in when you have drawn nothing.

This build ships as a compiled .ex4 for MT4 and .ex5 for MT5; the screenshots below come from EURUSD H1.

Platforms	MT4 (.ex4) + MT5 (.ex5)
Chart window	Main price chart
Plots	2: Cross up, Cross down
Alerts	popup, push notification, email, sound
Inputs	54

What the Cross Line Phone Alert Indicator draws on the chart

Cross up places a lime arrow on the bar that closed through a level from below.

Cross down places a red arrow for the opposite crossing.

OBJ_HLINE and OBJ_TREND objects carry the levels, in the armed colour or the triggered one.

A corner panel lists every armed level with its distance in pips and its state.

• Cross up: arrow, lime, width 2, arrow code 233
• Cross down: arrow, red, width 2, arrow code 234

How the Cross Line Phone Alert Indicator calculates its values

Where the levels come from

Three sources feed the watch list. Up to six prices typed into `InpLevel1` through `InpLevel6`. Every horizontal line and trendline you drew. The code re-reads those on each tick, so dragging one re-arms it. An auto-seed fallback wakes only when the first two find nothing.

What counts as a cross

`InpCrossMode` `0` demands a close through the level, using the previous close and the current one. Mode 1 accepts a wick touch instead, taking direction from the bar body. A trendline supplies its own sloping value at each bar, so the code tests a rising line against the price it actually held there.

Two guards against noise

`InpRequireExtreme` demands the crossing bar also be a local high or low. `InpMinBarsApart` `6` keeps two marks on the same side apart. Without both, six levels and a loose touch test paint a wall of overlapping tags.

How to read the signals

Green marks an armed level and orange-red one that has already fired.

The panel distance column tells you which level price is heading for.

One message covers every crossing on the same bar, so the phone gets one push.

Auto-seeded levels stand down the moment you type a price or draw a line.

Alert channels in this build: popup, push notification, email and sound, one message per closed bar.

`EnableAlerts` ships on, and unusually so does `EnablePushNotify`, because pushing to a phone is the whole job. `EnablePopup` and `EnableSound` are also true, while `EnableEmail` is false. `SoundFile` picks the clip. Alerts run on the last closed bar, once per bar, and the code folds every crossing into one message.

Every Cross Line Phone Alert Indicator input

Core settings: Fixed price levels

Setting	What it does	Default
InpLevel1	Alert level 1 (price, 0 = off). First typed alert price, default `0.0` which means off.	0.0
InpLevel2	Alert level 2 (price, 0 = off). Second typed alert price, default `0.0`.	0.0
InpLevel3	Alert level 3 (price, 0 = off).	0.0
InpLevel4	Alert level 4 (price, 0 = off).	0.0
InpLevel5	Alert level 5 (price, 0 = off).	0.0
InpLevel6	Alert level 6 (price, 0 = off).	0.0

Core settings: User-drawn objects

Setting	What it does	Default
InpUseChartObjects	Also watch lines YOU drew (HLINE + TREND). Watches the lines you drew as well, default `true`.	on
InpUseHLines	Include horizontal lines. Includes horizontal lines in the watch list, default `true`.	on
InpUseTrendLines	Include trendlines (sloping value per bar). Includes trendlines, reading their sloping value per bar, default `true`.	on
InpObjectFilter	Only objects whose name contains this (blank = all). Only watches objects whose name contains this text, blank by default.

Core settings: Auto-seed

Setting	What it does	Default
InpAutoSeedLevels	Seed levels from recent swings when none are set. Seeds levels from recent swings when you supply none, default `true`.	on
InpAutoSeedLookback	Bars scanned for the auto-seed swings. How far back the auto-seed scan reaches, default `100` bars.	100
InpAutoSeedBars	Bars each side that confirm an auto-seed swing.	3
InpAutoSeedRound	Also seed the nearest round numbers.	on
InpRoundStepPips	Round-number grid step (pips). Round-number grid step for auto-seeding, default `50.0` pips.	50.0

Core settings: Cross definition and noise guards

Setting	What it does	Default
InpCrossMode	0 = close cross, 1 = wick touch. Close cross at `0`, wick touch at 1.	0
InpRequireExtreme	Crossing bar must be a local high/low. Demands the crossing bar be a local high or low, default `true`.	on
InpMinBarsApart	Min bars between two marks on the same side. Gap the code keeps between two marks on the same side, default `6`.	6
InpCooldownBars	Per-level cooldown between alerts (bars). Quiet period for a level that just fired, default `6` bars.	6
InpRearmPips	Price must leave a level by this to re-arm (pips). Distance price must travel from a level to re-arm it, default `10.0` pips.	10.0
InpScanBars	History bars marked on the chart. How many history bars carry marks, default `400`.	400

Core settings: Marks

Setting	What it does	Default
InpTagGapPx	Caption gap from the arrow (pixels).	38
InpUpTag	Caption on an upward cross.	BUY cross up
InpDnTag	Caption on a downward cross.	SELL cross dn

Core settings: Text fencing

Setting	What it does	Default
InpMaxTags	Hard cap on captions drawn at once.	12
InpMaxLevelTags	Hard cap on right-edge level tags drawn at once.	4
InpPriceScalePx	Right margin owned by the price scale (px).	62
InpOneClickWpx	Width of the one-click trade zone, top-left (px).	260
InpOneClickHpx	Height of the one-click trade zone, top-left (px).	100

Core settings: Readout

Setting	What it does	Default
InpX	Panel X offset (px).	14
InpY	Panel Y offset (px) – clears one-click panel.	120

Display settings

Setting	What it does	Default
InpDrawArrows	Draw cross arrows.	on
InpShowTags	Draw the text caption beside each arrow.	on
InpArrowOffset	Arrow distance from the bar (points). Mark distance from the bar in points, default `22`.	22
InpLabelEdgePadPx	Padding kept clear at the chart edges (px).	10
InpAvoidPanel	Keep captions clear of the info panel.	on
InpColourUserLines	Recolour YOUR lines by state (restored on exit).	on
InpArmedColor	Armed level colour. Colour for an armed level, default spring green.	spring green
InpTriggerColor	Triggered level colour. Colour for a level that has fired, default orange red.	orange red
InpLineWidth	Level line width.	1
InpLineStyle	Level line style.	STYLE_DASH
InpShowPanel	Show the level watch panel. Draws the level watch panel, default `true`.	on
InpCorner	Panel corner (0=UL 1=UR 2=LL 3=LR).	0
InpFontSize	Panel font size.	9
InpFont	Panel font.	Consolas
InpPanelBg	Panel background (navy dark).	RGB 10,14,26
InpBorderColor	Panel border.	royal blue
InpTextColor	Panel text.	white smoke

Alert settings

Setting	What it does	Default
EnableAlerts	Master switch over the watchman, default `true`.	on
EnablePopup	Terminal dialog when a level goes, default `true`.	on
EnablePushNotify	Phone push – the point of this tool. Phone push, which is the point of the tool, default `true`.	on
EnableEmail	Mail delivery when a level goes, default `false`.	off
EnableSound	Sound playback when a level goes, default `true`.	on
SoundFile	Wav file the watchman plays, default `alert.wav`.	alert.wav

Settings that fit your chart

A level watcher works on any chart, because the levels are yours rather than the tool’s. EURUSD H1 is the reference chart. On M5 the cooldown and the bars-apart guard matter most, since price saws across a level repeatedly. On H4 a crossing is a slower and more deliberate event.

When the Cross Line Phone Alert Indicator fails

It reports crossings and nothing else. The level still has to be worth watching.

`InpCrossMode` `0` misses a level that price wicked through and left, which is sometimes the move you wanted.

Auto-seeded levels come from a mechanical swing scan, so they carry no judgement at all.

Copy the compiled Cross Line Phone Alert Indicator file into your MQL4/Indicators folder, and the MT5 build into MQL5/Indicators, then restart the terminal and drag it onto a chart. The step-by-step guide with screenshots is at how to install MT4 and MT5 indicators.

Download the Cross Line Phone Alert Indicator for MT4 and MT5

The zip holds the compiled Cross Line Phone Alert Indicator build for MT4 and MT5, plus a short README. Compiled files only, no source. Enter your email below and the download link arrives in your inbox.

FAQ

What does InpCrossMode change?

How the code judges a crossing. At `0` the bar must close through the level, comparing the previous close and the current one. At 1 a wick touch counts, with direction taken from the bar body. Close mode gives fewer and firmer signals.

Why does InpRearmPips exist?

So a level that just fired stays quiet while price hovers on it. At `10.0` pips price has to travel that far away before the level arms again. Without it a bar oscillating on the line would push a message every bar.

Does InpUseTrendLines handle a sloping line?

Yes, properly. A trendline contributes a different price on every bar, and the code reads that value per bar rather than treating it as flat. So it tests a rising line against the price the line actually held when the bar closed.

What happens if InpAutoSeedLevels finds nothing?

It falls back to the plain highest high and lowest low of the lookback window. The seed only runs at all when no typed level and no drawn line exists, and it stands down as soon as you supply either.

Are results guaranteed?

No. Trading involves risk. Results are not guaranteed; past performance is not indicative of future results. Use the Cross Line Phone Alert Indicator as one input. Always backtest before trading live.