* PLEASE NOTE: ALWAYS drain your water chamber completely when transporting or moving your machine. Because of this, you can be assured that your therapy comfort will be maximized by virtually eliminating rain-out and condensation buildup in the tubing. Furthermore, System One Humidity Control monitors room temperature, room humidity, and flow to determine what is required to maintain your selected humidity setting, even when environmental conditions change. Even with a water chamber filled to the FULL line, the machine can be tilted and even turned upside down without leaking water back into the unit*. A cleverly designed water chamber works with a built in Dry Box to virtually eliminate water getting into the machine during normal use. Philips-Respironics also listened to user feedback when designing the System One Heated Humidifier. Delivering all the needs you require in a CPAP machine from CFLEX to reporting, this system has what you need. Is it time for your to get the latest and greatest in CPAP equipment? The Respironics REMstar Plus DS250HS offers just that. PR System One REMstar Plus CPAP Machine and Humidifier