prisma VENT40 now offers safety and even more flexibility. Thanks to a broad pressure range of up to 40 hPa and volume compensation, the device is suitable for treatment of a wide spectrum of disorders. Both prisma VENT30 and prisma VENT40 come with complete alarm management, integrated power supply unit, and an optional internal rechargeable battery with a 12-hour operating capacity. These features make prisma VENT easy to transport for safe use anywhere.