Specification: Single flow low purity alarm: if the purity is below 82% it will start blinking power failure alarm lcd display: accumulating time; present working time inbuilt nebulizing function timer for auto shut off capacity – 5 litres oxygen purity- 96±3% flow rate- 1-5l/min ( adjustable) outlet pressure – 0. 04-0. 07(mpa) sound level ≤50db power – ac230v,50hz( ac220v/110vt 10% ,50/60±1hz are available) power consumptions - ≤420w lcd display- total working time. Presetting time 10 mins to 9 hours alarm – power failure alarm. Below 82% low purity net weight 15kgs size (mm) 365 x 375 x 600mm.