How to change screen setting on a Max Lite touchscreen monitor

To change screen settings: 

• Turn on the screen, if off, by tapping it at any point or by pressing the centre button on the 1717/4x Video Door Phone. 
• If your current page is not the video door phone page, tap the icon  to access the Top Page and then the icon  for the video door phone.
• Tap the icon  at the top right to go to the video door phone general configurations page:

Tap the writing Video. A window opens listing the various screen parameters (the current value is shown to the right of each parameter):

• Screen Brightness
• Idle Timeout, i.e. the idle time delay after which the screen will go off.
• Default Video Mode For Calls, i.e. the screen format (16:9 or 4:3) for incoming video door phone calls. The video format can be changed, temporarily, even during a call via the the icon
  
  
• Tap the parameter that you wish to change. A pop-up window opens where you can change the current parameter via a slider control or select a new setting from a given list.
• Select the required parameter or tap the X icon at the top right to close the window without making any changes.