Kelly KLS7230S controller, what is the real max voltage?

Controller is this:
http://kellycontroller.com/kls7230s24v-72v300asinusoidal-brushless-motor-controller-p-1343.html

Do you have any experience what is the real maximum voltage of this controller? Manufacturer says it's 90 volts but have you tried it on any higher voltages? What is the voltage where the smoke goes out from the box? :lol:

I'm thinking to try this controller with 24s pack but before I dare to try that it's good to hear does anyone have any experience of the higher voltages on this controller.

It won't work because the Controller has a High voltage sensor so it just gives you an error code.
But if you go too high the controller just dies.