G3 B30VT is a bi-level device with S/T mode with a target tidal volume feature for patients with respiratory insufficiency. In spontaneous mode, the device triggers IPAP when flow sensors detect spontaneous inspiratory effort and then cycles back to EPAP. In timed mode, the IPAP/EPAP cycling is purely machine-triggered, at a set rate, typically expressed in breaths per minute (BPM). Its Target Tidal Volume Function optimizes IPAP according to mean Vt of last 5 breathings and prescribed Target Vt. Innovative PUSH water chamber is simple to use. Water can be added without removing the water chamber for ease of use. It's a more visualized display and more humanized interaction Innovative screen saver and accessories reminder function. The G3 series has a pre-heat feature, to warm your humidifier water up for ultimate comfort during cold, dry weather. Integrated heated tubing with intelligent Auto Humidity Control allows G3 maximum moisture while ensuring rain out in the tubing is not an issue. G3 uses oscillating wave technology to determine which type of apneas are best treated with changes in airflow and pressure. BMC uses multi-stage noise reduction technology to ensure noise performance under 26 dB.