The Chad Evolution Electronic Oxygen Conserver offered by Drive Medical is a superior oxygen saturation device. The Evolution delivers a uniform oxygen pulse which can range from 14 breaths per minute to 40, supporting a wide range of needs and activity levels. The Evolution Electronic Oxygen Conserver senses a breath and delivers oxygen only in the first half of the inspiratory cycle, resulting in no wasted oxygen while delivering an effective oxygen dose. In addition, the Evolution has a 5:1 savings ratio and liter flow settings between 1 and 7 LPM providing a high level of conservation while offering versatile liter flow options.Features and Benefits Delivers a uniform oxygen pulse from 14-40 breaths per minute Compatible with CGA 870 Delivers 5:1 savings ratio at all settings Minimum 2 year battery life utilizing 2 AA Batteries (average 4 hrs per day usage) Liter flow increments: 1, 2, 3, 4, 5, 6, 7 Plus CF preset @ 2 LPM Operating pressure range: 200-3000 PSI Senses a breath/delivers oxygen in the first half of the inspiratory cycle Single push button selects the equivalent LPM dosage settings Auto shut-off feature conserves battery life Fits easily in virtually any carry bag
