The TSI indicator is a , considering that it comes from two momentum indicators.
Ultimately, the TSI indicator is used to gauge the strength of a trend, as well as its accompanying momentum.
The indicator is shown to oscillate between -110 and +110, while its signal baseline is on the zero level (a level that determines the market bias).
In true TradingView spirit, the author of this script has published it open-source, so traders can understand and verify it. Cheers to the author! You may use it for free, but reuse of this code in a publication is governed by House Rules. You can favorite it to use it on a chart.