Karcher DE 4002 Steam CleanerSTEAM CLEANER SG 4 4 The SG 4 4 is a compact and robust steam cleaner which offers outstanding power and optimal cleaning, thanks to 58 PSI steam pressure, variable steam control and the VapoHydro function (continuous regulation of steam saturation). The 2 tank system can be refilled at any time. A rapid heat up time of the water provides uninterrupted operation. The temperature indicator also helps to provide optimal cleaning results. The SG 4 4