A user interface for a breathing apparatuse has a contact-sensitive screen operable to cause a change in the operation of the breathing apparatus based on touch input from an operator. The contact-sensitive screen has a first touch area through which a breathing apparatus setting can be changed by the touch of the operator, and at least a second touch area at a distance from the first touch area. To avoid unintentional changes of the breathing apparatus setting, the user interface is configured such that the breathing apparatus setting can be changed only by touching the first and second touch areas simultaneously.
