The YH-830 Bi-level device is indicated for treatment of sleep apnea hyponea syndrome in patients weighing more than 66Ib (30kg). It is intended both for home use and hospital use. The water tank is intended for single patient use in the home environment and re-use in a hospital/institutional environment. Maximum inhale pressure 30cmH2O, with separate humidifier (better humidification) ST and target tidal volume mode settings Fast rise time Normal inhalation intensity, respiration rate is 54 times / min, with each exhalation triggering the ventilator perfectly. Good synchronization with big flow Mode: CPAP, S, T, ST, VGPS Trigger adjustment Cycle adjustment Slope adjustment Noise less than 32 dB(A) With YF-01 mask, humidifier and SD card Water tank and power adapter Parameters Package Size 3 CTNS 48.5 32.521.5cm 37 24 17cm(Cart Parts) 90 52.8 21cm(trolly) N.W.(kg) 22 G.W.(kg) 28 Pressure: 4-30 cm H2O