The S9 90W power supply is an ideal for people using ResMed S9 machines with a Humidifier.
Q: Is this S9 Power Supply unit simply an uninterruptible power supply only to be used in conjunction with a regular AC (50 Hz 240 V) power supply? A: No, it is the basic power pack (mains to machine) required to run an S9 with a humidifier attached. An S9 not using a humidifier can use the 30w Power Supply unit
Q: Is this part a 240 volt to 24 volt genuine ResMed power supply? A: Yes this is the genuine 90w ResMed power supply required to power both the machine and humidifier
Q: Will this S9 Power Supply unit work in India? A: This is a power supply unit with an Australian plug configuration. In another country you would need to convert the plug configuration, however, this change would not affect the operation of the unit as it automatically works between 110v and 240v.