Node reference

RSI — Relative Strength Index

Momentum oscillator (0–100) measuring the speed of recent gains vs. losses.

Rev. 2026.06

RSIindicator

InputsOutputs

Source

source · number

RSI

main · number

Configure

period: — Lookback length, in bars; default 14; range 1–500

RSI80.5latest

rsi

Period14

2 · fastsmooth · 30

Mid period (14) — a balance of sensitivity and steadiness.

What it does

Measures momentum on a 0–100 scale. Above 70 is conventionally overbought; below 30 oversold.

What happens

Recomputed each candle from its wired source (default close), incrementally. It has no value until period bars have passed (warmup); after that it emits the RSI for every bar.

When to use

Mean-reversion entries (buy oversold / sell overbought) or as a momentum filter on a trend strategy.

Gotchas

Overbought ≠ sell signal in a strong trend — RSI can stay >70 for a long time.
Shorter periods are noisier; 14 is the classic default.