This may be off topic, but.... I'm having a very difficult time getting a JSN-SR04T-2.0 working AT ALL!
I've not found any information that has worked for me and I've spent many hours and tried with and without the NewPing library.
I would be very helpful if you could post details on your setup if you actually have the 2.0 sensor working. Please post details about the connection to the arduino and a very simple working sketch. Your 5 minutes of effort will really help me out!
Thank you!