The provided reference mentions the ApneaLink Air system. The video doesn't specifically detail how to turn off the machine, but implies that after recording your sleep data, you don't need to turn it off yourself.
Instead, return the ApneaLink Air system to your clinician for analysis. The machine has already recorded the necessary data about your sleep patterns. There is no mention of any steps the patient needs to take to deactivate or "turn off" the device. The analysis is done by professionals after the study is complete.
