A respiratory conduit apparatus that conducts a breathable gas for respiratory therapy may include electrical circuit components to assist with therapy. In an example, a delivery conduit for connection with a patient interface and a respiratory therapy device may include a cuff having a microcontroller unit. The cuff may be configured with circuit components for accessory identification, gas characteristic detection for therapy control, heating and communications. In some versions, the delivery conduit may include a controller in a circuit board assembly located at an end of the delivery conduit. The printed circuit board may be configured to control and power the components of the cuff, as well as communicate with a respiratory therapy device.