PSA - Pressure swing adsorption technology and adjustable flowrate.
Nebulizer device can be fitted if necessary.
Power failure alarm, pressure alarm, low purity alarm.
Double flow meter control for two patients.
Timer: (a) total working hours of the unit, (b) present working hours, (c)timer for 30/60/90/120 min - the unit shall stop by the time over.
Ultraviolet light in the box on top of the unit to sterilize the used tube.