The device provides an ideal solution for bstructive Sleep Apnea/Hypopnea Syndrome patient. The breathing pattern is continually monitored and the pressure is automatically adjusted accordingly to suit patient needs as they change throughout the night and provides the minimum pressure required for an effective therapy. The device is capable of enhancing compliance reporting and features compact design with a built-in humidifier. The advanced auto pressure adjustment algorithm provides high sensitivity and smoothly releases pressure while the exclusive EPS pressure variation algorithm remarkably improves the patient's comfort. The large colorful screen provides friendly interaction while the Micro SD (TF) card enables downloading and transferring of the long term monitoring information. The device comes with a free software for usage of patients and doctors. The built-in clock and alarm provides regular treating period and safe therapeutic process is ensured by power failure alert. Higher water/dust protection increases durability and suitability for travelling. Automatic leakage & altitude pressure compensation ensures therapy pressure.