indicator · own pane · open source

Relative Strength Index

Deepwick · @deepwickv1Updated 2 Oct 2026▲ 0 users

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About

Relative Strength Index (RSI) is Wilder's classic 0-100 momentum oscillator: average gains over average losses.

Above 70 = overbought, below 30 = oversold (adjustable via the inputs).
Raise Length for fewer, higher-quality signals in choppy markets.
Watch divergences between RSI and price making for higher-probability turns.

Source code

//@version=5
indicator("Relative Strength Index", overlay=false)
len = input.int(14, "Length", minval=2, maxval=200)
src = input.source("close", "Source")
ob = input.int(70, "Overbought", minval=50, maxval=95)
os = input.int(30, "Oversold", minval=5, maxval=50)
rsi = ta.rsi(src, len)
hline(70, "Overbought", color=color.gray, linestyle=hline.style_dashed)
hline(30, "Oversold", color=color.gray, linestyle=hline.style_dashed)
hline(50, "Midline", color=color.gray, linestyle=hline.style_dotted)
p_RSI = plot(rsi, "RSI", color=color.purple, linewidth=2)
alertcondition(ta.crossunder(rsi, 30), "RSI oversold", "RSI crossed below oversold")
alertcondition(ta.crossover(rsi, 70), "RSI overbought", "RSI crossed above overbought")

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