The second generation of Novak´s ESC were consisting of the T-1 (competition) and T-4 ESC (budget). Beside some changes in controller electronics the main change was using Tempfet transistors instead of regular FET. Tempfet are FET transistors with an embedded thermal protection. Also a LED for setup of throttle hipoint was a new feature for these ESC.
The T-1 was introduced in 1986 and the T-4 version in 1988.