1st it exactly looks like the original Supertrend indicator. But if you see the options, you can see it is totally different:
It uses my other indicator inside: Zero Lag Keltner Channels, so you can use smoothed ATR bands for calculation instead of the raw ATR. By default it's length is 1 so it works like the original Supertrend.
You can choose different sources and moving averages for Keltner Channel calculation
It can filter outliers in ATR calculation
The indicator code is in my TAExt library, so it can easily be used in custom strategies.