Hello,
How I can configure shelly to control fan with 2 speeds. Ch1 must not be on at same time as ch2 and vice versa.
Like in roller shutter mode, but i don´t know how to configure it to stay on permanently.
I have wall switch that controls power on and second switch that controls speeds.
I tried roller shutter mode with timers to 0 and calibration disabled but it still goes off in approx 18 seconds.