The Keltner Channel is a popular and free Forex indicator used by traders in the MT4 platform. It is a useful indicator that helps traders identify trends and potential entry and exit points in the market. The Keltner Channel indicator is based on the Average True Range (ATR) indicator, which measures the volatility of the market. The Keltner Channel uses this volatility to create three bands – an upper band, a middle band, and a lower band. The upper and lower bands are typically set two ATR values above and below the middle band. The Keltner Channel indicator is used to identify trends in the market. When the price is trading above the upper band, this indicates an uptrend in the market. Similarly, when the price is trading below the lower band, this indicates a downtrend in the market.