The calculation is made according to the author's formula for the beginning of a possible trend.
MT4 version is here https://www.mql5.com/ru/market/product/98041
The indicator builds buy/sell arrows and generates an alert.
Use the standart Bollinger Bands indicator to improve performance.
For SELL, it shows an down arrow and also gives a sound signal.
"Indicator Setting"
If for any reason you do not like the purchased program, you can request a refund within 30 days from the date of purchase. You can also make an exchange for any other product at an equal cost or by paying the difference.
Simply send a request for refund or exchange with your order number by email: support@ea-market.pro.
Refund requests received more than 30 days after purchase will be rejected.