SMI Trigger System

SMI Trigger System (Lower) — Buy Low / Hrugu (Modified)

This indicator is a modified version of the original SMI Trigger System created by Buy Low, with later enhancements by Hrugu, published with permission.

The script is a lower-pane Smoothed Stochastic Momentum Index (SMI) designed to deliver clear, visually intuitive momentum signals without unnecessary clutter. This version focuses exclusively on SMI behavior and removes auxiliary indicators to keep signals clean, readable, and consistent across timeframes.

Key Features

Smoothed SMI line with dynamic color changes based on momentum direction

Raw SMI line for additional reference

Zero-line split cloud shading for quick bullish/bearish momentum identification

Upper and lower SMI reference levels for overbought/oversold context

Exact-bar SMI color-flip triangle markers for immediate visual confirmation

Adjustable triangle size and offset so markers do not overlap the SMI line

Fully customizable colors for:

Zero line

Smoothed SMI (up/down)

Raw SMI

Cloud above and below zero

Upper and lower SMI levels

How to Use

This indicator is designed to highlight momentum shifts, not to predict price. It works best when combined with price structure, trend context, or higher-timeframe bias.

1. SMI Line & Color Changes

The smoothed SMI line changes color based on momentum direction:

Up color → momentum strengthening

Down color → momentum weakening

A color change often signals a potential momentum shift.

2. SMI Color-Flip Triangles

Green ▲ triangle below the SMI
Appears when the smoothed SMI turns upward (bearish → bullish momentum).

Red ▼ triangle above the SMI
Appears when the smoothed SMI turns downward (bullish → bearish momentum).

Triangles are plotted on the same bar the SMI changes color and are offset so they do not overlap the SMI line.

These markers are intended as visual confirmations, not standalone trade signals.

3. Zero Line & Cloud

The zero line separates bullish and bearish momentum regimes.

Cloud above zero → bullish momentum bias

Cloud below zero → bearish momentum bias

Stronger signals often occur when SMI flips in the direction of the cloud.

4. Upper & Lower SMI Levels

Upper and lower reference levels help identify extended momentum.

Momentum flips near or beyond these levels may indicate:

Exhaustion

Potential pullbacks

Trend continuation setups when aligned with higher-timeframe direction

5. Best Practices

Use this indicator as a confirmation tool, not a prediction tool.

Combine with:

Market structure

Support and resistance

Trend direction

Volume or price action

Works well on tick charts, intraday timeframes, and higher-timeframe analysis.

Additional Notes

Triangles do not repaint

All visual elements are user-configurable

No ADX or Awesome Oscillator components

Designed for clarity, speed, and ease of interpretation

This script is intended for analytical and educational purposes only and does not constitute trading advice.