Can I disable OPEN/CLOSE WORKING TIME

I want to use a Shelly 2.5 to control the speed of my ventilation system in my home.

At the moment I have a button with three positions; low, medium and high. But actually only two signals are sent to the system; medium and high. So actually the control is the same as with a roller shutter. The up and down signals go to the motor. In the neutral position, no signal goes to the motor.

So I think I can use a Shelly 2.5 to take over the control from this three position switch.

My only question is if I can disable the "OPEN/CLOSE WORKING TIME", for example by setting this time to zero.

Does anyone have experience with disabling this working time?

I have since found out for myself that through the API you can set the Open and Close time and thus get around the 120 second limitation:

http://[ip-shelly2.5]/settings/roller/0?maxtime_close=210

http://[ip-shelly2.5]/settings/roller/0?maxtime_open=210

I don't know if 0 seconds allows you to turn off this timer. Haven't tried.

(Because I don't need it anymore)