Product Warranty 3 Years for new units sold on or after January 4  2011 * (Oxygen Sensing Device) standard on every unit * Quiet operation * Two-year dealer service interval * Recessed humidifier nook prevents damage * Easy to assemble/disassemble * Lockable flow meter - Pediatric flow meter available * Accommodates up to a 50-foot cannula (15.3 meters) * Intake filter features a translucent back * Alarms: High/low pressure  low flow  low oxygen  power fail * Power Consumption: 310 Watts (270 Watts @ 2.5 lpm or less) * Works with the Invacare Home Fill cylinders