See also:

Switching the warning function on/off
Switching the warning function on/off Press the button ▷ On: the LED lights up. ▷ Off: the LED goes out. The state is stored for the remote control currently in use. ...

Activating HDC
Press the button; the LED above the button lights up. ...

Backrest width
Change the width of the backrest using the side wings to adjust the lateral support. ...