Display and controls for a CPAP device

An apparatus for treating sleep disordered breathing (SDB) in a patient, the apparatus comprising:

• a flow generator configured to deliver a supply of air at positive pressure in the range of 4 to 25 cmH2O;
• a display configured to display a plurality of screens to a user;
• a set of controls operable by the user;
• and
• a controller configured to control operation of the flow generator and the display, receive user input from the set of controls, detect whether at least one accessory device is connected to the apparatus, and determine the identity of the at least one accessory device, if the controller detects at least one accessory device connected to the apparatus;
• wherein the controller is configured to instruct the display to display a first screen of the plurality of screens based on whether the controller detects at least one accessory device connected to the apparatus and the identity of the at least one accessory device determined by the controller, if the controller detects at least one accessory device connected to the apparatus;
• wherein when the display is displaying the first screen and the controller receives user input from the set of controls, the controller is configured to instruct the display to display a second screen of the plurality of screens in response to the user input;
• and
• wherein when the display is displaying the second screen and the controller determines that a predetermined period of time has elapsed after the controller received user input without receiving further user input, the controller is configured to instruct the display to display the first screen.