I think this depends on your doctor/clinic and where you are. The last one I took home just had an oxygen sensor and the skin probe/patch. The doctor said they

I think this depends on your doctor/clinic and where you are. The last one I took home just had an oxygen sensor and the skin probe/patch. The doctor said they get (hand wavey) 95%+ of the same diagnostic capability from the simpler setup and far fewer claims of poor quality sleep caused by the equipment.