long cond.: 15 min IFTSMI crosses ABOVE -0.5 or SRSI k-line crosses ABOVE 50 while 1-hour IFTSMI is already ABOVE -0.5
short cond.:15 min IFTSMI crosses BELOW 0.5 or SRSI k-line crosses BELOW 50 while 1-hour IFTSMI is already BELOW 0.5
SMI and Inverse of SMI codes belong to @kivancozbilgic.
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.