Parabolic SAR Alerts
Parabolic SAR is one of the most misread indicators on a chart because every dot looks the same - the trend-following trail and the single bar where it actually reversed are drawn identically, so traders end up staring at the whole series to catch the moment that mattered. This indicator calls the platform's own iSAR() for every value, so the trail itself is exactly the built-in calculation with no reimplementation risk, then adds a second layer on top: it compares the dot's side (above or below price) on each bar against the bar before it, and only where that side actually changed does it draw a larger, differently coloured arrow and fire an alert. The comparison is done on price side, not on any internal SAR state flag, because that is the only definition that matches what a trader actually means by "it flipped" - the dot crossed from one side of the candle to the other between two closed bars. Notes and limitations - The SAR trail itself is the unmodified built-in calculation; this file adds no smoothing or filtering to it, so whipsaw behaviour in a ranging market is exactly what plain Parabolic SAR produces, not something this indicator introduces. - The flip arrow for the current, still-forming bar is never drawn - only a closed bar can confirm a side change, since the SAR value and the price it is compared against can both still move before the bar closes. - Designed as a trend and reversal cue, not a standalone entry system. It gives no sense of how strong the underlying trend is, only that the dot has switched sides.
Indicator · MT5 · v1.0 · Free
About Parabolic SAR Alerts
Parabolic SAR Alerts is an indicator for MetaTrader 5 based on Parabolic SAR. It draws buy and sell arrows on the chart and can alert you with a pop-up, sound, email or push message. It has 3 settings, such as Step, Maximum and Alerts. MQL source code included.
Files in the download: SarAlerts.ex5, SarAlerts.mq5, SarAlerts.txt.
Settings
| Setting | Default | What it does |
|---|---|---|
| Step | 0.02 | SAR step: acceleration added on each new extreme |
| Maximum | 0.20 | SAR maximum acceleration factor |
| Alerts | true | Alert once per closed bar when SAR flips side |
How to install
- Download the ZIP from your PolyMaria library and unzip it.
- In MetaTrader 5 open File → Open Data Folder, then go to MQL5 → Indicators.
- Copy the .mq5 file(s) there. Put any .mqh files in MQL5 → Include.
- Open the .mq5 file in MetaEditor and press Compile (F7) if MetaTrader does not show it.
- Drag the indicator from the Navigator onto a chart and adjust the settings.
Tags: Parabolic SAR · Buy/Sell Arrows · Alerts · Trend · MT5 Indicator · MQL5 Source Code