Although the Trendlinebreak Alert Indicator is an indicator it must be installed as a EA. The download is a ZIP file which means you need Winrar to open it after the download.
Once you’ve extracted the file, open you MT4.
Click on File – Open Data Folder
Click on MQL4
Drag the trendlinealert.mq4 file into this folder. Restart your MT4.
You will find the Indicator under Expert Advisors. Drag and drop it on to the chart window.
Make sure you activate Auto Trading.
Setup your lines and you’re ready to go.