A collection of consumable devices designed to work together to deliver humidified pure oxygen (O2) or an O2 enriched gas to a mask or nasal cannula during oxygen administration to a patient (e.g., oxygen therapy, anaesthesia). It includes oxygen administration tubing (inspiratory line, dryline) which includes an electronic component (e.g., temperature sensor, heating wire), an inspiratory line humidification chamber, and may include a water bag. This is a reusable device.