William Blau's TVI indicator for MT4. Originally created in 1995 it was one of the first "all-in-one" indicators and caught the keen eye of many technical traders and is still used today.

How to use:

• TVI bar color change is a signal to enter the market. When the TVI changes from yellow to red, it is a signal to buy and if the TVI bar changes from blue to green, it is a signal to sell.
• Just like the MACD and TRIX, the zero line on the indicator determines market sentiment and trend. If the TVI bars are above the zero line it's bullish and if the TVI bars are below the zero line the trend is bearish. Zero line crosses can be used to determine continuation and trend entries as well.
• The indicator also displays the market trend of the chosen timeframe and automatically displays this in text in the top left indicator window as (“up” or “down”).