The ResMed DC/DC Converter 24V/90W allows you to operate any AirSense 10 device from a 12V or 24V DC power source in a car, boat, or other vehicle equipped with a suitable battery. Consult your equipment supplier for more information about this accessory. Compatible with all AirSense, AirStart, and AirCurve machines:AirSense 10 CPAPAirSense 10 Elite AirSense 10 AutoSetAirSense 10 AutoSet for HerAirCurve™ 10 VAuto with Heated HumidifierAirCurve 10 VPAP S with Heated HumidifierAirStart CPAPAirStart Auto CPAPTechnical specifications:Length (connector to connector): approximately 7.5 feetBattery voltage: 12V or 24 VFuse rating: 20ATypical current consumption: 6.0A at nominal 12V input, 3.0A at nominal for 24V input. The actual current level will depend on pressure and humidification levels and breathing patterns. Output voltage: 24V, 2.5A.