Resmed Vpap III ST-A . Comes with Heated Humidifier, Smartcard, Standard Hose

Resmed Vpap III ST-A. Comes with Heated Humidifier, Smartcard, Standard Hose & Travel bag. Cinical Manual Instruction. Upgraded hose pipe to work with conjunction with Oxygen Bottle. To be used as Covid Relief Machine.
Bilevel Pressures
The device assists spontaneous breathing by moving between two pressures in response to the patient flow or a preset fixed time. The inspiratory positive airway pressure (IPAP, or the sum of PEEP and the pressure support level) assists inspiration.
The lower expiratory positive airway pressure (EPAP, or PEEP) eliminates exhaled air through the mask exhaust vent. This facilitates exhalation comfort while providing a stent to maintain an open upper airway.
The difference of the two pressures—pressure support level—contributes to improved patient ventilation. The following diagrams illustrate the modes of operation available on the VPAP III ST-A with QuickNav. There is also a CPAP mode where a single level of continuous pressure is provided.
S (Spontaneous) mode
The device senses the patient breath and triggers IPAP in response to an increase in flow, and cycles into EPAP at the end of inspiration. The breath rate and the respiratory pattern will be determined by the patient.
T (Timed) mode
The fixed breath rate and the fixed inspiration time set by the clinician are supplied regardless of patient effort.
S/T (Spontaneous/Timed) mode
The device augments any breath initiated by the patient, but will also supply additional breaths should the patient breath rate fall below the clinician's set ’backup’ breath rateCPAP mode
A fixed pressure is delivered.

I am in Orange Grove.