The protection level is IP54 rated:

– Protected from water spray from any direction

– Protected from limited dust ingress

The products is intended to be installed with the glass covers which can be customized on request. The upper part of the glass is backlit (to illuminate the room number or a logo – both customizations on request); in the lower part there’s  1 button (typically with bell function) and 2 LEDs for displaying the MUR and DND states.