The Havocs---1S, 2S and 3S---are compatible only with temperature protected motors.
I don't think this is a good decision by Novak. Forcing customers who purchase a Havoc to use a Novak motor as well is a bit heavy-handed.
I went ahead and bought one anyway because right now it's about the most affordable BL sensored ESC out there.
That is bound to change however, and when others become available at a similar price point, who would buy a Havoc when you can't run your choice of motors? Not me... At the very least Novak needs to incorporate a setting to defeat this in the ESC software.
ianc